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 
Use every other day at night
After cleansing, at the moisturizer step, apply a small amount to areas of concern such as under eyes, mouth, forehead and neck 
(Recommended amount : 0.1ml per section / 1 grain of rice) 

WEEK 3~ 
May apply everyday 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.