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Mineral Makeup and Its Role with Acne and Rosacea Jane Iredale, MA; Jennifer Linder, MD

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Mineral Makeup and Its Role with Acne and Rosacea Jane Iredale, MA; Jennifer Linder, MD REVIEW Mineral Makeup and Its Role With Acne and Rosacea Jane Iredale, MA; Jennifer Linder, MD Rosacea and acne have been the cause of physical and emotional distress for patients worldwide. Part of the distress has originated from the inability to find products that provide coverage without exacerbating the conditions. This includes understanding the role of certain ingredients with their attendant negative and positive effects. Fifteen years of experience has shown that mineral makeup can play a large part in helping to repair patients’ self-esteem as well as playing a meaningful role in skin improvement. IDENTIFYING AUTHENTIC For physicians to assess mineral makeup and its ben- MINERAL MAKEUP efits for their patients with rosacea and acne, it is neces- Patients with acne and rosacea frequently seek options to sary to explore the chemical composition of authentic cover what they consider toCOS be visually frustrating condi- DERMmineral powder. Many makeup brands are now mar- tions. Regrettably, they often make choices that are not keting products they call mineral makeup, but they effective and potentially detrimental to their situation. do not utilize authentic minerals in their formulations. To serve these patients better, physicians should educate The incorrect use of the word mineral as a marketing themselves and their staffs about camouflaging options. term confuses patients and can lead to the use of prod- Mineral makeup can beDo a satisfactory solutionNot as it is a ucts Copythat can potentially worsen their condition due to healthy, skin-friendly alternative to traditional makeup. problematic ingredients. Mineral makeup not only provides superior coverage and The original definition of mineral makeup is a makeup is easy to use, but it is also UV protective, noncomedo- that eliminates talc, potential skin irritants, and comedo- genic, and anti-inflammatory. It is beneficial for physi- genic ingredients, all of which are critical for patients to cians to increase their understanding of authentic mineral avoid if they have acne and rosacea. Authentic mineral makeup because, as with skin care, patients expect phy- powders are primarily comprised of combinations of tita- sicians to be the experts when it comes to anything that nium dioxide (TiO2), zinc oxide (ZnO), iron oxides, mica, affects the health and appearance of the skin. bismuth oxychloride (BiOCl), or boron nitride (BN). In authentic mineral powders, the minerals will appear at the top of the ingredients list because ingredients must Ms. Iredale is Founder and Chief Executive Officer, Ire- be listed in descending order by volume. In traditional dale Mineral Cosmetics, Ltd, Great Barrington, Massachusetts. makeup, minerals are usually listed on the label under Dr. Linder is a board certified dermatologist and fellowship- the phrase may also contain, indicating that they may or trained Mohs surgeon in private practice, Scottsdale, may not exist in the formula and that their percentage is Arizona, and Clinical Instructor, University of California, likely to be minimal. San Francisco. Unfortunately, the most common ingredient in tra- Ms. Iredale is Founder and Chief Executive Officer of Iredale ditional makeup is talc, comprising 70% to 90% of the Mineral Cosmetics, Ltd. Dr. Linder is a consultant, speaker, and formula. Although talc, also known as soapstone, is a honorarium recipient for sanofi-aventis US LLC, and a con- mineral (magnesium silicate hydroxide), the definition of sultant, speaker, and honorarium recipient for Allergan Facial an authentic mineral makeup is one that contains no talc. Aesthetics. Dr. Linder is also Chief Scientific Officer for PCA SKIN, The dilution of actual mineral pigments in talc diminishes in which she has an equity stake. their benefits, deadens the look of skin, and increases the Correspondence: Jane Iredale ([email protected]). requirement for reapplication. Coverage with a heavily VOL. 22 NO. 8 • august 2009 • Cosmetic Dermatology® 407 Copyright Cosmetic Dermatology 2010. No part of this publication may be reproduced, stored, or transmitted without the prior written permission of the Publisher. MINERAL MAKEUP talc-based makeup is at best unsatisfactory and camou- together to maximize the benefits and effectiveness of flage is almost impossible. mineral makeup. An authentic mineral formula containing a high percentage of minerals provides numerous benefits to Titanium Dioxide patients with acne and rosacea including sun protec- Found in the minerals rutile (beach sand), anatase, and tion, lack of comedogenic ingredients, anti-inflammatory brookite (relatively rare), TiO2 is a naturally occurring action, and versatile coverage. This concentrated pig- oxide of titanium. It is seldom used raw because of its ment also gives the mineral powder adherence that rarely photocatalytic propensity. To make it effective and ben- transfers or necessitates reapplication, which makes them eficial, TiO2 is surface treated to eliminate oxidation and useful for busy patients. to increase its ability to refract UV rays. Dimethicone is commonly used for this purpose, due to its ability to COMMON MISCONCEPTIONS increase the light-scattering properties of TiO2. Approved To comfortably answer patients’ questions, it helps to have as an active physical sunscreen ingredient, TiO2 is anti- a basic understanding of several of the common miscon- inflammatory and provides coverage. ceptions about the minerals that are in mineral powders. Minerals used in mineral powders are inorganic, Zinc Oxide defined as without carbon molecules. Because carbon Manufactured from the mineral zincite, ZnO is a pure compounds are the basis for all living organisms, inor- white mineral known for its anti-inflammatory and anti- ganic compounds are considered to be of nonliving or microbial properties and is approved as an active physical mineral origin rather than biologic origin. Their inert sunscreen ingredient. nature eliminates the risk for bacterial contamination. This is in contrast to organic, defined as that which Mica contains carbon and therefore requires preservatives to Mica is naturally occurring; however, natural mica has prevent decay and contamination.COS DERMnot been used in cosmetics since 1960. Currently, all mica No minerals formulated in cosmetic powders are used used in cosmetics is manufactured. Mica can be used in directly from the earth and some are entirely manufac- larger particle sizes to provide shimmer, or in small parti- tured. Most minerals go through extensive refining pro- cle sizes to render it matte and absorbent to the benefit of cesses and should be classified as inorganic compounds patients with oily skin. It is also often used as a colorant. (eg, TiO2 and ZnO). A Dobrittle metal that Notis used exten- Although Copy it is rare, some sensitivity to mica can occur. sively in mineral makeup, BiOCl is found as the mineral bismuth in the earth’s crust and in certain types of ores. Bismuth Oxychloride This mineral requires considerable refinement and purifi- Originating as the mineral bismuth, BiOCl is processed to cation before it can be used topically. produce an iridescent white or nearly white metal pow- Iron oxides used for cosmetics are wholly synthesized der. Its sheen has led it to being called synthetic pearl. It to avoid the heavy metal contamination found in nature. adds color, coverage, and adhesion to the finished prod- Authentic minerals have no relationship to mineral oil, uct. Of all the ingredients in mineral makeup, this is the which is a liquid petrolatum, a by-product of petroleum. one that is often blamed for irritation, usually described As there is no scientific definition of the term natural as as itching and burning. Although BiOCl is commonly it relates to cosmetics and cosmeceuticals, the common used in traditional makeup, it is present in mineral question asked by patients whether mineral makeup is makeup in larger quantities. natural cannot be truly answered. Boron Nitride WHICH MINERALS ARE USED AND WHY Manufactured as a white, silky powder, BN provides smooth- The primary minerals used in mineral makeup are ben- ness, coverage, slip, and sheen. It is also known as the “soft eficial to patients with acne and rosacea because many focus” mineral because of its light-refractive qualities. are photoprotective, water resistant, noncomedogenic,1 innately antibacterial, anti-inflammatory, and camouflag- Iron Oxides ing. Mineral makeup is often favored over other makeup Iron oxides, commonly known as rust, are primarily foundations by patients with erythema following chemi- used as colorants. All iron oxides used in cosmetics are cal peels and laser resurfacing, erythema caused by acne, required to be synthesized under strict laboratory pro- rosacea, melasma, and postinflammatory hyperpigmen- cesses. Iron ore cannot be used directly from nature due tation.1 several key mineral ingredients are combined to its heavy metal content. 408 Cosmetic Dermatology® • august 2009 • VOL. 22 NO. 8 Copyright Cosmetic Dermatology 2010. No part of this publication may be reproduced, stored, or transmitted without the prior written permission of the Publisher. MINERAL MAKEUP PROBLEMATIC INGREDIENTS Binders Mineral makeup was developed to benefit the conditions Binders, substances that hold powders together, can be that typically occur or worsen as a result of wearing tradi- comedogenic, such as octyl palmitate, or can be ben- tional makeup. some types of acne, inflammation, contact eficial to the skin, such as dimethicone. This
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