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