Frequently asked questions
Find answers to all your questions about Miriam Quevedo: our history, products ingredients, and philosophy. Learn how to care for your hair, scalp and skin to shine even more.
Miriam Quevedo is the visionary founder behind our brand. It's one of the pioneers in the world of anti-age hair care. Her revolutionary approach led her to prioritize the scalp and place it at the centre of her development process. She recognized the importance of addressing this aspect, often neglected of capillary care, because the skin of the scalp – an extension of the skin of our face – also ages and requires appropriate treatments to prevent and slow down their aging process. Miriam considers hair as an integrated structure, composed of scalp, follicle and fiber, and this understanding has led her to develop innovative formulations, which include precious ingredients and cutting-edge biotechnology for skin care applied to hair care and scalp, which act globally against aging theories from a cellular level.
«Beautiful hair starts with a healthy scalp» - Miriam Quevedo
With a solid background in cosmetology, Miriam Quevedo's journey began at an early age in her mother's herbal shops in Barcelona, Spain. There, she discovered her passion for combining precious raw materials to create unique synergies and unlock nature's best-kept secrets for skin and hair care. Miriam expanded her knowledge, trained as an esthetician and masseuse while completing her secondary education. She continued her higher education at the University of Barcelona, where she graduated in Economics, before completing a Master's in Small and Medium Enterprises at one of Barcelona's most prestigious business schools, ESADE, before bringing her own cosmetics brand to life.
Miriam Quevedo started as an anti-aging skin care brand, but soon expanded its offerings by developing a powerful hair care line. This was possible because she adapted her innovative biotechnology for skin care and precious ingredients to the specific needs of the scalp, follicles, and hair fiber. Each product has been meticulously designed to address both internal and external aging factors and to restore the health of hair, scalp, and skin. To learn more about hair aging, click here.
All Miriam Quevedo skin and hair care products are manufactured in Spain. The development process takes place in our in-house laboratory, where our R&D team, led by Miriam Quevedo herself, uses precious ingredients sourced from different parts of the world and employs advanced biotechnology.
Yes, all Miriam Quevedo products are safe for keratin-treated hair.
Yes, all Miriam Quevedo products are safe for color-treated hair. Additionally, our complete range of shampoos is formulated with natural surfactants with multiple benefits that minimize color loss over successive washes (they help retain more than 96% of the color after 10 washes).
Currently, two of our hair care collections are completely vegan: Sublime Gold and Black Baccara. Their formulations are composed of 100% environmentally friendly ingredients. Due to the inclusion of Caviar Extract and Orchid, the Extreme Caviar, Glacial White Caviar, and Platinum & Diamonds collections are not vegan.
The exact list of ingredients (INCI) is printed on the products themselves or on their packaging, providing direct access to this information.
If you have any doubts or questions about a particular ingredient, feel free to contact us at hello@miriamquevedo.com. We will be happy to assist you.
Yes, at Miriam Quevedo, exceptional ingredients are the essence of our formulations. Each precious ingredient has been carefully selected for its anti-aging properties and is combined with botanical blends and high-tech peptides to provide unparalleled luxury and effectiveness to the skin, scalp, and hair.
At Miriam Quevedo, we incorporate the philosophy of "clean beauty" into each of our decisions: our products are formulated with the best ingredients from nature and science, and we follow a sustainable and transparent mindset to offer products that are not only safe and highly effective but also reduce our environmental impact.
We do not use harmful or toxic ingredients (e.g., SLES sulfates, parabens, mineral oils, phthalates, paraffin, petrolatum), and we regularly review our formulas to change them if necessary and ensure that we use the best ingredients and technologies available on the market.
Read more about our Commitments here.
No, most Miriam Quevedo products are enhanced with fragrances created exclusively for the brand by the finest perfumers in Grasse, France. Please refer to the INCI names indicated on the back of the packaging. Fragrance appears as "Parfum/Fragrance".
Our 24k Bioactive Gold, present in the Sublime Gold collection, is a complex infused with a blend of 24k Micronized Gold and 24k Colloidal Gold, making it an extremely potent active ingredient with rejuvenating benefits. This gold optimizes the biodistribution of other ingredients for better and faster absorption, both in the hair fiber and the scalp. Additionally, it creates a true protective shield that fights aging and protects against free radicals, provides sublime luminosity, activates biological functions to help rebuild damaged cells, stimulates collagen synthesis, increases blood circulation, and acts as an antioxidant.
At Miriam Quevedo, we use Black or White Caviar Extracts in several of our hair care and skincare lines.
Our Extreme Caviar is enriched with Caviar Extract, an exceptional ingredient with anti-aging properties. Recognized for its lipoprotein complex and high concentration of vital amino acids, peptides, proteins, essential fatty acids, and trace elements. Its rich phospholipid content creates a hydro-lipidic barrier that prevents hydration loss. It provides intense protection for hair and scalp, restructuring damaged keratin bonds and restoring hydration, strength, and elasticity for vibrant and rejuvenated hair.
White Caviar Extract, the star of our Glacial White Caviar lines (for hair care, facial care, and body care), is one of nature's best-kept secrets in cosmetics. Rich in amino acids, proteins, essential fatty acids, trace elements, and peptides, it creates a unique anti-aging lipoprotein complex with powerful restorative, regenerative, and protective properties.
At Miriam Quevedo, we always recommend consulting with your doctor if you are pregnant or breastfeeding before using our products. However, you can safely use the Glacial White Caviar, Sublime Gold, and Platinum & Diamonds collections.
At Miriam Quevedo, we are firmly committed to creating the highest quality products that are cruelty-free and never subjected to animal testing. Additionally, it is important to note that animal testing is prohibited in Barcelona, Spain, where we develop all our products.
Although we use Caviar derived from sturgeon (roe) as an ingredient, we want to ensure that it is obtained in a cruelty-free manner. The sturgeons used for our Caviar come from aquaculture and do not suffer harm during the extraction process.
Our products are exclusively tested on humans and undergo clinical trials conducted by international independent laboratories, under the supervision of dermatologists and with the participation of volunteers. This allows us to guarantee that our products are highly effective and completely safe for use.
Since sun exposure is one of the main causes of premature aging, several of our products are formulated with sunscreens to protect both hair and scalp.
Products with Sunscreens: Sublime Gold Ultra-Brilliant Mist, Platinum & Diamonds Luxurious Drops, Sublime Gold Ultra-Nourishing Oil, Glacial White Caviar Precious Elixir.
Currently, our skincare line does not include any products with sunscreen (SPF).
Yes, our commitment to the environment is one of our top concerns. Therefore, we are actively working to significantly reduce the use of plastic, replacing our conventional plastic with 100% recycled plastic and I'm Green™ polyethylene, a material derived from sugarcane. Unlike traditional polyethylene, which is made from fossil fuels, I'm Green™ polyethylene is produced from a renewable source that helps reduce greenhouse gas emissions.
The paper used in our boxes and brochures is FSC (Forest Stewardship Council) certified, ensuring that it comes from responsible forest management, with social, environmental, and economic benefits.
It is important to remember that our packages are recyclable when properly disposed of. Please check local recycling regulations for more information on how to dispose of them properly.
Miriam Quevedo products should be used within a specific period. They are tested to have a standard shelf life of about four (4) years from the date of manufacture. The PAO (Period After Opening) may vary depending on the product. Please check the packaging and look for the open jar symbol, which indicates a number: 6M indicates 6 months, 12M indicates 12 months, etc. It is advisable to use the product within the indicated period after opening to ensure its optimal quality, as the formula may deteriorate after that time. Please note that our packages do not have an expiration date printed on them but rather a LOT number corresponding to the manufacturing date.
If in doubt, contact us at hello@miriamquevedo.com with your LOT number, and we will confirm the manufacturing date of your product. .
All Miriam Quevedo products are formulated to avoid allergic reactions and undergo testing by independent laboratories under dermatological supervision. If you have very sensitive skin and have experienced skin reactions when using cosmetics before, you can do a simple test: apply a small amount of the product to the inner forearm and leave it on for 24 hours. If you notice redness or any sign of reaction, the product may contain an ingredient that your skin does not tolerate. In that case, use is not recommended.
When referring to sulfates in hair care, the focus is on sulfate-derived ingredients used as cleansing (surfactant and foaming) agents in shampoos, such as sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES). These sulfate-based surfactants can be too harsh, stripping the hair's natural oils, causing color loss, scalp irritation, dryness, and are also harmful to the environment.
At Miriam Quevedo, we choose to use 100% natural, sulfate-free surfactants, sourced from botanical and sustainable origins. These are gentler and more effective, despite generating less foam.
Yes, at Miriam Quevedo, we offer a wide variety of products designed to suit all skin and hair types and concerns. Whether you have dry, sensitive, oily hair, or any other specific concern, you will find products formulated specifically to meet your particular needs. If you'd like to know which product from our current range is best for your hair or skin type, contact us at hello@miriamquevedo.com, request a free virtual consultation with one of our Hair & Skin Therapists by clicking here, or take our online hair diagnosis by clicking here.
Results may vary depending on the product, your hair or skin condition, and your desired goals. In our studies with external laboratories, we monitor results after 4, 8, and 12 weeks of use by participants.
For example, our Extreme Caviar Bio-Regenerative Shock Treatments require a minimum of 3 months to achieve optimal results, while Black Baccara's Bond Rejuvenating Luxe Cure is a more immediate product, providing visible results in just 20 minutes.
For best results, we always recommend following the complete ritual (weekly exfoliation, shampoo, mask/conditioner, serum) to ensure proper treatment from root to tip. If you want to know which rituals and/or products from Miriam Quevedo are right for your goals, our Hair & Skin Therapists are available to assist you.
Contact information below:
- Email: concierge@miriamquevedo.com
- Phone: +34 93 844 39 94
- Virtual consultatio: book here
- Online hair diagnosis: fill out the questionnaire
Miriam Quevedo is a brand specializing in anti-aging hair and skin care, so our products are not formulated for the specific needs of baby or young children's skin.
It is advisable to consult with a pediatrician or healthcare professional for advice on suitable products for baby and children's skin and hair care.
Generally, the amount of product to use depends on the length and amount of hair. Fine hair requires less product than thick hair. Since Miriam Quevedo products are ultra-concentrated, remember that "less is more."
Here are the recommended amounts by product type:
- Shampoo: the size of a euro coin. Remember that our shampoos do not contain SLES sulfates, so they produce less foam than usual.
- Conditioner: the size of a cherry.
- Mask: the size of a walnut for long hair and half a walnut for short hair. Exception: for the Sublime Gold Opulent Transforming Mask, half a walnut is sufficient.
- Oil: half a dropper.
- Serums: the size of a hazelnut.
Remember to work the product between your hands to warm its texture and distribute it well through massage to penetrate properly.
Visible signs include hair loss, lack of density, dullness, frizz, split ends, and changes in texture or color. Invisible signs include internal inflammation, imbalanced microflora, and thinning scalp skin.
Key factors include epigenetics, free radical effects, and inflammaging. Biological, environmental, chemical, mechanical, and lifestyle aging also contribute.
Fine hair is structurally weaker and appears limp. Strengthen it from the root, thicken fiber structures. With Platinum & Diamonds, achieve a silky, protected, and ultra-voluminous mane.
Oily hair results from overactive sebaceous glands. Hormonal imbalances, stress, lifestyle, and inappropriate products can be decisive factors.
Seborrheic dandruff involves greasy skin patches covered with white or yellow scales or crusts and itching. Symptoms often flare up with stress, fatigue, or seasonal changes.
The phases are anagen (growth phase, the longest), catagen (short transitional phase where hair stops growing), telogen (resting phase, lasts about three months), and exogen (old hair sheds as new hair grows).
Repair damage, protect hair, restore vitality and strength, ensure good blood circulation, oxygenation, nutrient flow, improve follicle anchorage and size, and prevent growth cycle disruptions.
Hair loss typically increases in autumn due to factors like the hair’s life cycle, environmental changes after sun exposure, sea water, chlorine, summer heat, reduced daylight, colder weather, and increased stress.
Our scalp skin ages six times faster than the rest of our body. Split ends, dullness, dryness, and porosity are like wrinkles for hair. Daily aging factors lead to premature hair aging. Calculate your hair's age with our online diagnosis.
Our in-house R&D labs create comprehensive treatments using green technology and biotechnology to reverse the causes and effects of hair aging. We transfer the unique and precious active ingredients Miriam used in skincare to haircare.
Use products suited for your hair type, activate cellular mechanisms, ensure nutrient delivery, and maintain a stable growth cycle. Exfoliation is crucial as it enhances microcirculation, improves oxygenation, removes residue, and ensures nutrient absorption.
Black Baccara Rose Youth Concentrate, Hair Growth Factors (Capixyl and Scalp Densifier), Prebiotic Complex with Xylitol, botanical molecular blend, L-Arginine, and Bio-Active Charcoal protect and regulate follicle function, stimulate blood flow, and ensure healthy growth.
We use Cegaba to reduce sebum and dandruff, Piroctone Olamine as an anti-fungal and anti-bacterial agent, Brewer’s Yeast to combat seborrhea and prevent dandruff, and a Molecular Anti-Dandruff Agent for prolonged anti-dandruff action and soothing effects.
We use premium anti-aging ingredients like caviar, 24k gold, and platinum and diamond powder; oils, floral extracts, and waters; and natural peptides like hexapeptides and tripeptides. Biotechnology enhances the functionality and effectiveness of these active ingredients.
Natural or genetic aging, hormonal imbalances, stress, excess sebum, and other factors disrupt cell function and hair growth phases, slow circulation, and reduce nutrient and oxygen delivery to follicles, leading to miniaturization, fragility, and hair loss.
During postpartum and breastfeeding, hair loss is common but temporary. Focus on strengthening hair throughout pregnancy. We recommend Special Hair Loss Shampoo with Hair Loss Shock Treatment or Vitamin Reinforcing.
Losing 50 to 150 hairs daily is normal. Concern arises when hair loss exceeds this for over three months or when you notice reduced density. Start specific treatments even if caused by seasonal changes or stress spikes.
Hair growth varies per person, averaging around 1.25 cm per month. The growth phase lasts 2 to 7 years before falling out to allow new hair to form.
Our Multi-Vitamin Complex 8 (A, B2, B5, B8, C, E, H, and PP) supports cell respiration and reproduction, ensures proper division, regeneration, and renewal, and stimulates hair growth, enhancing density.
Dandruff forms due to disrupted scalp flora, irritation, dryness, excess sebum, conditions like psoriasis or eczema, and overgrowth of the fungus Malassezia.
Dry dandruff appears as loose white flakes that easily fall off the scalp. Oily dandruff consists of small yellowish scales that stick to the hair and scalp, accompanied by itching, burning, and inflammation.
Extreme Caviar Purifying Charcoal Shampoo is formulated for oily scalps or seborrheic dermatitis, with multi-vitamin complexes to regulate sebaceous gland activity and prevent rebound effects.
Exfoliating the scalp is crucial to remove toxins, oil, and impurities, preventing suffocation and ensuring nutrient and oxygen delivery. Clear pores, restore the hair's natural protective barrier, and avoid sulfates.
Daily washing is fine with gentle products that preserve the hair’s natural barrier. Massage the scalp during each wash to enhance oxygenation and ensure thorough rinsing to remove product residue.
Maintain hair rejuvenation, nourishment, and protection against damage. Regenerate the hair's electrical balance, thicken and strengthen the hair.
Natural aging leads to protein loss, making hair finer. Hormonal changes can reduce hair body and vitality, while external aging factors further damage and thin hair.
Depending on your location, you can purchase Miriam Quevedo products on our official online store (miriamquevedo.com) or at one of the points of sale of our authorized distributors. Use our Store Locator to find your nearest store.
At Miriam Quevedo, we believe that choosing a product should be based on the specific needs of the skin, hair, and scalp, as well as lifestyle, to achieve effective results. Therefore, our Hair & Skin Therapists are available to guide you through our catalog via free 20-minute virtual consultations, through email, and over the phone. Additionally, we have developed an Online Hair Diagnosis, based on our virtual consultation process, which will help you identify the perfect hair care ritual according to your needs and goals, in just a few minutes.
Contact information:
• Email: concierge@miriamquevedo.com
• Phone: +34 93 844 39 94
• Virtual consultation: book here
• Online hair diagnosis: fill out the questionnaire
Below is a summary of all the Miriam Quevedo hair care collections with their main keywords:
At Miriam Quevedo, we offer free 20-minute virtual consultations to assist you in finding the right products from our range or to address any questions you may have. This consultation can be conducted via Zoom, phone, or email, whichever you prefer.
Once you've booked your consultation, you'll receive confirmation and reminders before the scheduled date. During the consultation, your skin and/or hair will be analyzed with professional questions to accurately determine your needs and create a personalized ritual with Miriam Quevedo products.
Afterward, you'll receive this ritual via email, along with some additional tips from concierge@miriamquevedo.com (please check your spam folder if you don't receive it within 24 hours).
You can also participate in follow-up consultations to review the results and update the ritual if necessary.
If you'd like to book your virtual consultation, click here.
There are two official online stores: one for European countries (miriamquevedo.com) and another for the United States (miriamquevedo.com/us/).
In Europe, we offer international shipping to various countries, so please check the list of eligible specific countries for shipping here or during the checkout process.
If you have any questions, contact us at hello@miriamquevedo.com.
Yes, the online store has a policy that allows returns and exchanges within a certain period. Please refer to our Shipping Policy page or contact us at hello@miriamquevedo.com for detailed information about our return and exchange policy.
Please accept our sincere apologies for any inconvenience caused by the discontinuation of certain products. Our range of products is constantly evolving to offer you the best in hair and skin care. Sometimes, we are forced to discontinue certain references or reformulate the original version.
Discontinuing a product is not a decision we take lightly but depends on the overall success of that reference or the need for space for new innovative treasures. If you would like to know which product from our current range can be used as an alternative, please do not hesitate to contact us at hello@miriamquevedo.com or request a free virtual consultation with one of our Hair & Skin Therapists by clicking here.
If a product is out of stock, it will be indicated on its product page, and the option to add it to the cart will be disabled. If you would like to receive an alert via email as soon as the product becomes available again, you can provide your email address in the space provided on the product page.
It may also happen that a product unexpectedly goes out of stock while your order is being processed; in this case, we will notify you by email (from hello@miriamquevedo.com) as soon as possible and refund that specific reference.
Only products purchased through miriamquevedo.com or at the points of sale of one of our authorized distributors are guaranteed to be authentic.
Please note that we do not sell products on Amazon.com.
If you have any questions, contact us at hello@miriamquevedo.com.
To ensure the highest level of quality control, Miriam Quevedo products are distributed and sold exclusively through authorized distributors and sellers. Any product purchased from an unauthorized distributor or seller will not be considered valid by Miriam Quevedo; you assume all responsibility.
If you have any questions, contact us at hello@miriamquevedo.com.
For customer service-related questions, contact us at hello@miriamquevedo.com.
For questions related to Press, Social Media, or Influencers, contact us at communication@miriamquevedo.com.
For questions related to Sales (vendors, distributors, salons, spas, hotels), contact us at commercial@miriamquevedo.com.
For questions related to Human Resources, contact us at hr@miriamquevedo.com.
For any other type of question, contact us at hello@miriamquevedo.com.
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