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When taken by mouth: The alpha hydroxy acid called malic acid is POSSIBLY SAFE when used short-term. Some people can have side effects including diarrhea, nausea, and general stomach discomfort.
When applied to the skin: Alpha hydroxy acids at a concentration of 10% or less as a lotion or cream are LIKELY SAFE for most people when applied to the skin appropriately and as directed. In some people, alpha hydroxy acids can make the skin extra sensitive to sunlight. Be sure to use a sunscreen while using alpha hydroxy acid products. Alpha hydroxy acids can also cause mild skin irritation, redness, swelling, itching, and skin discoloration.
Facial peels, lotions, and creams with a concentration greater than 10% should only be used under the supervision of a dermatologist. Facial peels can cause moderate to severe skin irritation, redness, and burning. Facial peels left on the skin for periods longer than recommended can cause severe burns to the skin.
When taken by mouth, the alpha hydroxy acid called malic acid is POSSIBLY SAFE when used short-term. Some people can have side effects including diarrhea, nausea, and general stomach discomfort.
Special Precautions & Warnings:
Pregnancy and breast-feeding: Alpha hydroxy acid creams at a concentration of 10% or less are
LIKELY SAFE when applied to the skin during pregnancy and breast-feeding. There isn't enough reliable information to know if alpha hydroxy acid is safe to take by mouth when pregnant or breast-feeding. Stay on the safe side and avoid use.
Sensitive skin: Alpha hydroxy acids can worsen skin conditions by causing skin irritation and removal of the top layer of skin cells.
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