Sunscreen suitable for preventing aging skin
Skin aging is a kind of complex biological procedure that is influenced by a combination of internal or intrinsic and external or extrinsic factors. Variations in individual genetic background are thought to result in intrinsic ageing as time passes. By definition, this form of ageing is unavoidable so it is apparently not subject to manipulation through changes in human behavior. Besides, extrinsic ageing is largely preventable. Factors with clearly external origins, including smoking, poor nutrition and especially solar exposure, are the main causes of extrinsic, premature, cutaneous ageing. Studies also show that sun exposure, is believed to account for 80% of facial ageing.
The only known defense against photo-aging beyond sun avoidance is sunscreens. Sunscreens decline the amount of UV reaching the skin by using retinoid to inhibit collagenase synthesis, they also promote collagen production. Using both Sunscreens and anti-oxidants leads to reduce and neutralize free radicals.
How to choose the best sunscreen?
If you want to prevent skin aging you can choose a sunscreen with “broad spectrum” protection. Sunscreens with this label protect against both UVA and UVB rays. All sunscreen products protect against UVB rays, which are the main cause of sunburn and skin cancers. It is noteworthy that UVA rays also contribute to skin cancer and premature aging.
If you want protect your skin, make sure your sunscreen has a sun protection factor (SPF) 30 or higher. The SPF number is the level of protection the sunscreen provides against UVB rays. Sunscreen with SPF below 15 only protects against sunburn, not skin cancer or skin aging. Higher SPF numbers do mean more protection, but the higher you go, the smaller the difference becomes. SPF 15 sunscreens filter out about 93% of UVB rays, while SPF 30 sunscreens filter out about 97%, SPF 50 sunscreens about 98%, and SPF 100 about 99%. Sunscreen cannot protect your skin completely.
Be careful that the “Water resistant” does not mean “waterproof.” No sunscreens are waterproof. If labeled on the sunscreen label, “water resistant”, it must specify whether it lasts for 40 minutes or 80 minutes while swimming or sweating. For best results, renew sunscreen at least every 2 hours and even more often if you are swimming or sweating.
Published by: Exon Wellness Department
Date: 7/31/20192019 July 31