... as well as cellulite reduction. 1, Derma roller is used for one of the following skin problems:1) Scar ... ) For the skin regeneration:1.0 1.5(used for solutions of thin epidermis,thin wrinkle,decline of ... ageing&rejuvenation of ruined skin:1.5 2.0(used for solutions of thick wrinkle,large pore,injury ... ,pimple scar,severe decline of elasticity,etc) 3,How to use:Follow 3 steps of needling to enhance ...