Dual-head design, multi-purpose Precision Spotting Head: Fine-tipped tip accurately locates small area marks to avoid accidentally touching healthy skin. Large area applicator: wide tip design covers a large area, efficient and time-saving. 2-in-1 portable design: one pen integrates two functions, no need to carry multiple tools, easy to store, suitable for home, travel, business trips at any time. Fast and effective, gentle skin resurfacing Scientific formula: the use of plant extracts + mild acid composite ingredients, accelerate epidermal metabolism, lighten pigmentation, visible visible visible results in 7- 14 days. Painless and non-invasive: non-laser, non-surgical, no recovery period, only a slight warm feeling after application, does not affect daily activities. Gradual Improvement: Gently breaks down melanin to avoid over-stimulation, suitable for sensitive skin (topical testing before first use is recommended). Portable and easy to use, care anytime, anywhere Pen design: lipstick size, lightweight and portable, can be put into your makeup bag, pocket, business trips, traveling, before a date to reapply at any time. Swivel Dispenser: One-handed swivel to control the amount of liquid, to avoid waste, clean and hygienic non-stick hands. Waterproof and leakage-proof: Sealed pen body design prevents liquid spillage, worry-free to carry.