Cosrx The Retinol 0.5 Oil – 20ML

No purified water or retinol derivatives. Formulated using 0.5% stabilized, pure retinol for powerful anti-aging care. Best for skin accustomed to retinol but still experiencing progressive signs of aging such as loss of elasticity and dryness. For intermediate-level retinol users looking for a highly concentrated, youth booster. Feel the benefits of Retinol without irritation. (*Based on clinical trials- 30 subjects completed the test.) How to use /Start samll and slow!/ During evening care, apply 1 to 2 drops to hand and tap with fingertips from inside out, let absorb. Limit initial use to three times per week; gradually increase frequency to every other night, use as tolerated. * Have an ‘adaption period’ when using retinol /Week 1~2/ Frequency : use only 2~3 times a week at night After cleansing, at the moisturizer step, apply 1-2 drops to areas of concern. e.g. under eyes, mouth, forehead and neck /Week 3~/ Frequency : may apply every other day at night After cleansing, at the moisturizer step, may spread over the entire face. * The “”building tolerance”” phase can be shortened or extended depending on individual differences * Maintain this phase until no discomfort is experienced. * Gradually increase frequency and areas of application.