Formulations with Pro-Cysteine

Pro-Cysteine is an ingredient often used in whitening and anti-aging cosmetic formulations. It is a modified form of Cysteine, which is a precursor to glutathione production in the body.

When formulating with Pro-Cysteine, it's important to note that it is highly acidic and requires pH adjustment using an alkali like Sodium Hydroxide or Triethanolamine.

Examples of commercial products that use Pro-Cysteine include:

• Vichy IDÉALIA EYES EYE CONTOUR IDEALIZER
• LANCOME BIENFAIT MULTI-VITAL SPF 30 DAY CREAM
• LA ROCHE-POSAY Active C10
• L'OREAL Youth Code Dark Spot Correcting & Illuminating Serum Corrector

These examples show that Pro-Cysteine can be incorporated into various product types, such as eye contour creams, day creams with SPF, and serums.