The Ordinary Mandelic Acid 10% + HA is a gentle exfoliating solution that combines 10% mandelic acid with hyaluronic acid. Mandelic acid is a larger alpha hydroxy acid molecule that provides milder exfoliation compared to other AHAs, making it suitable for sensitive skin. Since this is a personal care product containing active ingredients, specific usage instructions should be followed: Apply once daily, preferably in the evening. Start with less frequent application to build tolerance. Use sunscreen during the day as AHAs can increase sun sensitivity. Not recommended for use on sensitive, peeling or compromised skin. The product comes in a 30ml amber glass bottle with dropper applicator for precise dispensing.