Specification:

Derma roller is a beauty tool that can be applied to but is not limited to the following aspects:
1. Skin care: Derma rollers can promote skin cell regeneration, increase the generation of collagen and elastic fibers, improve skin texture and elasticity, and reduce the appearance of fine lines and wrinkles.
2. Acne scar treatment: Derma rollers can stimulate blood circulation in the acne scar area, promote new skin cell growth, and reduce the appearance of scars.
3. Hair regeneration: Derma rollers can stimulate the blood circulation of the scalp, promote the nutritional supply of hair follicles, and promote hair regeneration.
4. Diminish pigmentation: Derma rollers can stimulate blood circulation in pigmented areas, promote new skin cell growth, and reduce the appearance of pigmentation.
5. Promote product absorption: Derma rollers can stimulate small channels on the skin surface, increase product penetration, and improve the absorption rate of skin care products.