SKIN TYPE: ADVANCED ENVIRON USERS ALL SKIN TYPES EXCEPT ACNE & ROSACEA. Needle length 0.01mm Directions: to be introduced in AVST level 2 or 3 or C-quence Serum 2. You cannot progress to AVST level 4 or C-quence Serum 3 without needling at home. Clean your roller with the cleaning solution once a week. Rinse under water after every use and store away in the container. Do not leave it sat in water or the cleaning solution for longer than 15-20 minutes. Use in the evening. Cleanse and tone the face, gently stamp around the eyes, nose and lip area. Work in horizontal and vertical lines. Hold the skin taut before stamping. Do not apply too much pressure.