Powerful 15% non-sticky waterless formula proven to brighten skin in delicate face/neck areas. Targets dark spots and boosts hydration.  Reduces hyperpigmentation, protects skin from damage, and reduces dark undereye circles over time.

Apply a few drops in the morning and evening to a dry face and neck (after washing), gently rub in and do not wash after applying, continue any other skincare including make up after a few moments allowing serum to absorb.

Pentylene Glycol: This is a common solvent and humectant used to improve the texture and absorption of formulations. It helps stabilize Vitamin C and enhances penetration into the skin. It can be used in both water-based and oil-based formulas.

Ethyl Ascorbic Acid: This is a stable, water-soluble derivative of Vitamin C. It is known to be more stable than L-ascorbic acid and works well in both water and oil formulations. You can definitely use 15% ethyl ascorbic acid for a brightening shot, as it is effective in reducing pigmentation and improving skin tone at this concentration.

Citric Acid: Often used to adjust the pH of formulations, especially Vitamin C serums, which require a slightly acidic pH (around 4-5) to remain stable and effective. Citric acid is also an AHA (Alpha Hydroxy Acid), so it has some exfoliating and brightening effects on the skin, although it's typically used in small amounts.