ORNITHINE is graded A (Safe) by Expert·ING, based on COSING, FDA regulatory data.

ORNITHINE

Safety grade: A

Ornithine is an amino acid, which are the building blocks of proteins naturally found in your body. It's used in skincare to help support the skin's natural moisture and elasticity.

Ornithine conditions and hydrates the skin by supporting its natural moisture barrier and promoting a smoother, softer skin texture.

Graded using: COSING, FDA.

Last verified: May 26, 2026