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Bentonite clay is an absorbent fine powdery earth which forms due to the weathering of volcanic ash in seawater. This process turns the volcanic glass present in the ash to clay particles. Bentonite clay has a variety of uses in skin and hair care, such as in clay face masks or hair masks.
Bentonite clay works like a sort of sponge, wicking oil and dirt away from your skin. This gives it powerful cleansing properties, and it is excellent for treating oily or acne-prone skin. It also possesses antibacterial and anti-inflammatory properties, which can help clean your further and help with the healing process. It’s natural absorbent properties make it a favorite for detoxifying your skin and hair, and even to help remove toxins like those caused by poison ivy rashes. Some sunscreens contain bentonite clay to improve their ability to stay on the skin.
There are no serious drawbacks of using bentonite clay topically, as it is an all-natural ingredient. Few people have been shown to have irritation caused by bentonite clay. However, since it is a natural substance, there is a risk of contamination. It may contain traces of heavy elements, pesticides and other substances, which may be unhealthy for your skin and hair. In addition, the FDA has not yet regulated bentonite clay products.
Melasma is a specific example of hyperpigmentation. Melasma looks like whole patches of brown or darker skin across the parts of the face and neck. Melasma is common among women who are pregnant - it’s even referred to as “the mask of pregnancy.” But melasma can occur in both men and women who are not pregnant, too. Melasma can be caused by UV damage, but there are also genetic, hormonal, and medication-induced causes for melasma, too.
There are a variety of topical ingredients that can be used to lighten the skin from melasma or reduce its appearance. Each ingredient works in different ways, and each has their own benefits and drawbacks. hydroquinone, arbutin, vitamin C (ascorbic acid, and tetrahexyldecyl ascorbate, etc) are some of the most commonly used ingredients for melasma treatment.
Hydroquinone is a skin lightening cream that works by suppressing the production of melanin. There are drawbacks to using hydroquinone, however, including cancer risks demonstrated by recent scientific studies, as well as hydroquinone-induced ochronosis.
Arbutin is a synthesized derivative of hydroquinone. It acts as a powerful skin lightening ointment that works a bit differently than hydroquinone. It blocks the production of melanin instead of “bleaching” the skin.
Vitamin C can be used as a brightening agent to lighten the hyperpigmentation of your sunspots or melasma. It works by inhibiting the enzyme tyrosinase, preventing the formation of melatonin.
Ascorbic Acid is actually the formal scientific name for one form of Vitamin C. It can refer to either a naturally occurring Vitamin C found in foods such as citrus, or a synthetic form of ascorbic acid created to be more shelf-stable for skincare products like discoloration repair lotions and creams.
Tetrahexyldecyl Ascorbate is another form of Vitamin C. By synthesizing this compound from Vitamin C, dermatologists are able to give us all the benefits of Vitamin C in a more shelf-stable form that can also be soluble in oil to make more effective, deeper penetrating skin products. (Herndon 2016)
Ingredients in the vitamin A family (ie. Retinol, tretinoin, etc) and acids (glycolic acid, lactic acid, salicylic acid) help damaged pigmented skin cells shred faster, so they also help with melasma.
Bentonite clay may be effective for melasma, but there are many other factors that may affect whether this ingredient would work on your skin or if there are better ingredients that may work for you. Take this skin quiz to find the best ingredients for your skin and build your skincare routine.
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