This ingredient list is subject to change, customers should refer to the product packaging for the most up-to-date ingredient list.

 Aqua/Water/Eau, Glycolic Acid, Glycerin, Caprylic/Capric Triglyceride, Methyl Glucose Sesquistearate, Propylene Glycol, Sodium Hydroxide, Glyceryl Stearate, Prunus Armeniaca (Apricot) Kernel Oil*, Cetyl Alcohol, Boron Nitride, Xanthan Gum, Caprylyl Glycol, Sclerotium Gum, Lecithin, Pullulan, Caprylhydroxamic Acid, Biosaccharide Gum-2, Helianthus Annuus (Sunflower) Seed Oil, Ascophyllum Nodosum Extract, Lavandula Angustifolia (Lavender) Oil, Pelargonium Graveolens Leaf Oil, Rosmarinus Officinalis (Rosemary) Leaf Oil, Rosmarinus Officinalis (Rosemary) Leaf Extract, Cupressus Sempervirens Oil, Thymus Vulgaris (Thyme) Flower/Leaf Oil, Silica, Sodium Benzoate, Potassium Sorbate, Linalool, Citronellol, Geraniol. * >Bio/Organic Ingredients 

Start by removing makeup and cleansing your skin with a Yon-Ka cleanser, then mist your face with Lotion Yon-Ka. Apply a thin layer of Glyconight 10% Masque to the face and neck, leaving it on the skin while sleeping, and rinsing off in the morning.

- For a radiance-boosting treatment, apply once in the evening for a stunning effect on skin brightness by the following morning.
- For a flash cure maintenance treatment, use the mask every other night for one week.
- As an intensive course of treatment (1 - 2 months), use every other night for the first week, then every night for each of the following weeks. Repeat this course of treatment two or three times a year for maximum results.

Before the first use and to check your tolerance to glycolic acid, apply a small amount of product behind the ear. If you experience any discomfort, remove it and try again the next day to confirm whether or not there is intolerance. For more details, refer to the instructions.