Baby's Physical Goals. Every day is a new adventure during baby's first year, as she hits new physical, emotional and social developmental milestones week after week. Wondering what the average age is for most babies to roll over, sit up on their own, crawl, walk and talk?
It is all attributed to the photoinitiators that added into the gels. The photoinitiators react when exposed to various wavelengths of UV light. Most photoinitiators react upon exposure to 340-410nm of lights. Therefore, nail lamps emits lights in 340-410 can get the nail polishes cured and get them dry.
Unlike acrylic nails, gel nails only harden when exposed to UV light. Geer explains that Gel polishes are similar to nail polish - you have a base coat, polish color and top coat. Both types of nails undergo chemical process to bond to the natural nail, however, there are some differences between the two.