The Ordinary Glycolic Acid 7% Exfoliating Toner A daily glycolic acid toner that smooths skin texture, evens tone, and enhances luminosity.The Ordinary Glycolic Acid 7% Exfoliating Toner (previously Glycolic Acid 7% Toning Solution) is an exfoliator that significantly smoothes skin texture and promotes the appearance of a more even skin tone, as well as more luminous skin, with regular use. It also reduces the appearance of lines and wrinkles. The water-based toner format is suited to daily use.It contains a 7% concentration of Glycolic acid - a well-studied alpha-hydroxy acid - and a plant-derived Tasmanian Pepperberry derivative, which varies in colour seasonally, and which may cause an apparent colour variation in the formula from time to time.This formula should not be used on sensitive, peeling or compromised skin. Please refer to the additional sun protection notes and other warnings in the provided directions.The pH of this formula is approximately 3.6. Glycolic Acid has a pKa of 3.6 and pKa is the most important aspect to consider in formulating with acids. pKa describes the acidity of a molecule. When pKa is close to pH, there is an ideal balance between salt and acidity, maximizing effectiveness of the acid and reducing irritation.Directions: Face/Neck Application: Apply once daily, ideally in the evening. Apply to the face and neck using a cotton pad or fingers.Scalp Application: Apply to dry scalp, three times a week. Tilt your head back and use the nozzle to gently dispense product from the front to the back of the head in a sweeping motion. Massage well.Do not rinse off. Do not use on sensitive, peeling, or compromised skin. Avoid the eye contour and contact with eyes.Contact of the product with the skin must be of limited frequency or duration.If eye or skin irritation occurs, rinse thoroughly, cease use, and consult a physician. Use only as directed on unbroken skin. Patch testing prior to use is advised. Keep out of reach of children.Sunburn Alert: This product contains an alpha hydroxy acid (AHA) that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing, and limit sun exposure while using this product and for a week afterwards. Free From: Alcohol, Oil, Silicone, Gluten, Vegan and Cruelty FreeFormulated with transparency and integrity, The Ordinary has been recognised as the #1 exfoliator brand in the UK* All products are certified as vegan & cruelty-free.*Source: Circana (UK) Ltd, Retail Tracking Service, Circana's 'Prestige' Retailers+, Skincare Unit Sales by Division, Facial Exfoliator and Body Exfoliator combined, 12 months ending May 2024. +Prestige Retailers defined as retailers authorized by law to carry specific products