/Start small 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 - How to Use : 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 - How to use : 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.

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