Shallow Wrinkle Rollers - 0.5mm Helps Treat Shallow Wrinkles, Scars, UV Damage and Hyperpigmentation. Collagen Induction Rollers - 0.75mm | 1.0mm Cellulite & Scar Tissue Rollers - 1.5mm | 2.0mm | 2.5mm | 3.0mm These Roller Sizes Can Help Treat DEEP/SEVERE Scarring, Stretch Marks and Cellulite. Great When Used Alongside Hair Loss Treatments Topical Rollers - 0.2mm | 0.25mm | 0.3mm Great For Boosting Topical Skin Care Product Absorption. These Roller Sizes Induce Collagen Growth More Effectively Than 0.5mm. Helps Reduce Sun Damage and Hyperpigmentation. Helps Treat Shallow to Deep Wrinkles, Scars, Stretch Marks and Cellulite. Safer To Use Them on Your Body Than on Your Face. Hair Loss Rollers - 0.2mm | 0.5mm 540 Titanium Alloy Derma Roller | Living Social