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The following doses have been studied in scientific research:
ADULTS
ORAL:
- For fibromyalgia: Specific tablets containing 1200 mg malic acid plus 300 mg of magnesium hydroxide (Super Malic tablets) have been taken twice daily for 6 months.
SPRAYED IN THE MOUTH:
- For dry mouth: A mouth spray containing 1% malic acid, a specific alpha hydroxy acid, has been used as needed.
APPLIED TO THE SKIN:
- For aging skin: Creams, solutions, or lotions, containing the alpha hydroxy acids lactic acid, citric acid, mandelic acid, or glycolic acid in concentrations up to 25% are used, usually twice daily. Peels containing 70% glycolic acid or 85% lactic acid have also been used, usually every 2-4 weeks.
- For dry skin: A cream containing alpha hydroxy acids or a lotion containing 12% lactic acid, a specific alpha hydroxy acid, have been applied twice daily.
- For acne: Solutions or creams containing 14% gluconolactone or 10% glycolic acid have been used. Creams containing alpha hydroxy acids, such as glycolic acid, malic acid, or citric acid, have been used in combination with other ingredients. A peel containing 40% glycolic acid has been used in 2 week intervals.
- For acne scars: Glycolic acid (GA) facial peels are used. Peels containing 20% to 70% glycolic acid have been applied every two or six weeks. Peels are applied for up to 4-5 minutes. Completing the series at least 5-6 times is usually needed before skin looks better. Sometimes a 35% or 70% glycolic acid cream is used along with a treatment called microneedling.
- For dark skin patches on the face (melasma): A 10% lotion of the glycolic acid (GA) is applied with a sunscreen to facial skin nightly for 2 weeks. Then a peeling program is done monthly for 3 months in a row. The peeling program features a 50% GA peel applied three times to the face and left on for a period of 2-5 minutes each time (first peel 2 minutes, second peel 4 minutes, and third peel 5 minutes). A peel containing 30% glycolic acid has been used every week in combination with laser treatment. *