Sun Protection: how to enjoy the sun safely and choose the right SPF

UVA and UVB Rays: what is the difference?

Ultraviolet radiation is mainly divided into UVA and UVB rays, both of which can damage the skin.

• UVB rays: affect the more superficial layers of the skin and are the main cause of sunburn.
• UVA rays: penetrate more deeply and accelerate photoageing, contributing to the development of wrinkles, loss of elasticity and dark spots.

Even on cloudy days, up to 80% of UV rays can reach the Earth’s surface. UVA rays can also pass through glass, making sunscreen advisable even in urban environments, while driving or during outdoor activities.

How to protect the skin from the sun

Sunscreen is essential, but it is not sufficient on its own. To help reduce UV-related skin damage, it is advisable to follow a few simple rules:

• avoid sun exposure during the hottest hours of the day, generally between 11:00 a.m. and 4:00 p.m.;
• apply sunscreen 20–30 minutes before sun exposure;
• use a sufficient amount of product on all exposed areas;
• reapply every two hours and always after swimming or heavy perspiration;
• wear a hat, sunglasses with certified UV filters and, where necessary, protective clothing.

Particular care should be taken with children, whose skin is more delicate and vulnerable to the effects of UV radiation.

SPF: how to choose the right sun protection factor

SPF, or Sun Protection Factor, indicates the level of protection provided against UVB rays, which are responsible for sunburn.

The main categories are:

• SPF 15: medium protection;
• SPF 30: high protection;
• SPF 50 and SPF 50+: very high protection.

For most people, using at least SPF 30 is advisable. SPF 50 or 50+ is the preferred choice for very fair skin, the presence of numerous moles, during dermatological treatments, in pregnancy or in cases of prolonged sun exposure.

It is important to remember that no sunscreen filter provides 100% protection against UV radiation. Correct application and regular reapplication are therefore essential to ensure effective protection.

At OPAC Group, we develop SPF solutions with a strong focus on efficacy, texture and sensorial performance, designed to meet the constantly evolving needs of the cosmetics market.
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