Excessive solar radiation causes photoaging of the skin, which is similar in appearance to age-related aging, but the causes are different. Aging from exposure to ultraviolet radiation leads to the destruction of collagen and elastin fibers and is accompanied by vascular damage, oxidative stress, the formation of wrinkles and hyperpigmentation.
What is sunscreen and why is it important? Sunscreen is a skin care product that protects against solar radiation, most commonly UVA and UVB. The filters in sunscreens absorb or transform the energy of solar radiation, and can protect against the risks of photoaging and skin cancer (actinic keratosis, basiloma and melanoma).
Hyperpigmentation is quite difficult to remove and can reappear in the same place from sun exposure. Basically, to combat hyperpigmentation, cosmetic procedures (photo- and laser therapy, peelings) and cosmetics (acids, whitening ingredients, antioxidants).
How to remove hyperpigmentation
With a tendency to hyperpigmentation or diseases provoking it, as well as after removal of pigmentation by cosmetic methods, it is recommended to use sunscreens with the highest sun protection factors from UVA radiation, especially from long waves (370-400 nm). Unfortunately, the manufacturer does not always indicate the protection factor and UVA wavelength on the sunscreen packaging.
The good protection of sunscreen against pigmentation is indicated by the high UVA-PF protection factor. This is a PA++++ or PPD 15-20 or higher badge. The UVA label in a circle indicates that the A-protection factor of the product is at least ⅓ of the SPF, but does not indicate the degree of protection. The Broad Spectrum label means that 10% of the intended UVA protection comes from longwave radiation, but also without specifying the degree of protection. You can also look for clues in the list of ingredients, at the moment the filter Mexoryl 400 or Methoxypropylamino Cyclohexenylidene Ethoxyethylcyanoacetate has the most complete spectrum of UVA protection – up to 400 nm.