What it is
Sodium aspartate is a small water-soluble amino acid salt that attracts and holds moisture. In a sunscreen it helps condition the skin surface and supports a comfortable, hydrated feel. Amino acids like aspartate are part of skin's natural moisturizing factor, which is why they are common additions to leave-on skincare.
Safety & warnings
Sodium aspartate is a simple amino acid salt that is generally well tolerated, with low irritation and sensitization potential. It is not comedogenic and is not a known fragrance allergen.
Origin & sourcing
Typically produced by fermentation or synthesis to yield aspartic acid, which is then neutralized with sodium; the amino acid itself occurs naturally in the body and many foods.
Questions everyone asks
What is sodium aspartate?
It is the sodium salt of aspartic acid, an amino acid used in skincare as a humectant and conditioning agent.
What does it do for skin?
It helps attract and hold moisture at the skin surface, supporting a hydrated, comfortable feel.