Phenylalanine: What is this ingredient?
A short definition is not available yet.
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Phenylalanine
Phenylalanine
One-line definition
A short definition is not available yet.
Ingredient FAQ
Phenylalanine: What does it do?
A short definition is not available yet.
Phenylalanine: What should I watch for?
Skin response can vary by skin type and formula, so patch testing is recommended for sensitive skin.
