分子式:C9H11NO2 分子量:165.19 Cas No:62-91-2; 150-30-1; 62056-68-2; 167088-01-9
Chemical formula

An essential amino acid that the body cannot produce itself but has to take from the diet. Combined with UVA exposure, phenylalanine is used in the treatment of vitiligo (a pigmentation disorder where patches of the skin lose the pigment).



Rating: GOOD
Benefits: Hydration, Anti-Aging
Categories: Antioxidant

Phenylalanine is what is termed as an essential amino acid, meaning that it does not occur naturally in the human body and must be provided inobtained from food. It plays an important role in the synthesis of other amino acids and is a precursor to the skin pigment melanin and the neurotransmitter dopamine.

Phenylalanine is found in the seeds and sprouts of plants such as spinach, sunflowers, peanuts, and many varieties of beans.

In addition to its benefit when consumed, research shows phenylalanine also has value when applied topically. As with many amino acids, it helps skin retain moisture for a more hydrated appearance. Studies also indicate that phenylalanine can aid in the reduction help to visibly reduce of the appearance of an uneven skin tone. This is, in part because of its connection to melanin and its ability to inhibit melanin production help control its deposition in skin’s uppermost layers. Phenylalanine has been shown to be well-tolerated by skin, with no reports of adverse reactions.

Usage levels of phenylalanine in cosmetics typically range from 0.00009–0.3% in rinse-off and leave-on formulas.

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