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  2. Dermatologists Say This Star Acne-Fighting Ingredient Can ...

    www.aol.com/dermatologists-star-acne-fighting...

    Reduces symptoms of keratosis pilaris (KP): Keratosis pilaris is a condition that’s characterized by bumpy skin on the arms, legs, or butt, and it's caused by a buildup of keratin in the hair ...

  3. Alpha hydroxycarboxylic acid - Wikipedia

    en.wikipedia.org/wiki/Alpha_hydroxycarboxylic_acid

    The FDA has warned consumers that care should be taken when using alpha hydroxy acids after an industry-sponsored study found that they can increase the likelihood of sunburns. [9] This effect is reversible after stopping the use of alpha hydroxy acids. Other sources suggest that glycolic acid, in particular, may protect from sun damage. [9]

  4. Toner (skin care) - Wikipedia

    en.wikipedia.org/wiki/Toner_(skin_care)

    These are a strong form of toner that typically contains alpha hydroxy acid and or beta hydroxy acid. Acid toners are formulated with the intent of chemically exfoliating the skin. [ 13 ] Glycolic, lactic, and mandelic acids are the most commonly used alpha hydroxy acids , best suited to exfoliate the surface of the skin.

  5. Rosacea - Wikipedia

    en.wikipedia.org/wiki/Rosacea

    Benefits of topical metronidazole include its effectiveness in reducing symptoms, extensive clinical experience supporting its use, and generally good tolerability with minimal systemic side effects; still, some patients may experience mild local irritation upon initial use, and it may have limited impact on persistent facial redness (erythema).

  6. The 7 best gray hair treatments of 2025, according to hair ...

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    The shampoo alone has nearly 10K reviews, with users noting noticeable improvements in their gray hair’s color, especially those with color-treated hair. Pros Neutralizes yellow or brass tones

  7. Skin whitening - Wikipedia

    en.wikipedia.org/wiki/Skin_whitening

    Skin whitening, also known as skin lightening and skin bleaching, is the practice of using chemical substances in an attempt to lighten the skin or provide an even skin color by reducing the melanin concentration in the skin. Several chemicals have been shown to be effective in skin whitening, while some have proven to be toxic or have ...

  8. The Best Hair, Skin and Nail Vitamins of 2024 - AOL

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    To provide extra benefits for hair, skin and nails, this supplement contains a proprietary blend of ingredients, including MSM to lower inflammation in the body and strengthen keratin, l ...

  9. Hydroxyproline - Wikipedia

    en.wikipedia.org/wiki/Hydroxyproline

    The most obvious, first effects (gingival and hair problems) of absence of ascorbic acid in humans come from the resulting defect in hydroxylation of proline residues of collagen, with reduced stability of the collagen molecule, causing scurvy. Increased serum and urine levels of hydroxyproline have also been demonstrated in Paget's disease. [10]