Ultraviolet (UV) Rays – It is a type of radiation that is produced by sun. The sun’s UV radiation is major cause of sunburn, premature ageing, eye damage and skin damage leading to skin cancer. However, it is also the best natural source of vitamin D. There are 3 types of UV rays.
Types & understanding about UV rays.
UV-C Rays - It penetrates up to upper layer of the epidermis (Stratum Corneum)
Damages skin cells
Ozone layer absorbs all the UV Rays
It has an anti-bacterial effect
Used for UV-sterilisation
UV-B Rays (The Burning Rays) - It penetrates up to basel layer
Trigger Mitosis which can cause skin cancer
Causes tanning & sunburn
UV-A Rays (The Aging Rays) - It penetrates up to dermis
Can destroy the connective tissue of the skin
Deeply penetrates into skin layers and damage collagen
Cause wrinkles, loss of elasticity and pigmentation
Look for following ingredients while buying sunscreen products:
Only these three ingredients can block UV A rays.