24/02/2026
⁉ What are the differences between UVA and UVB radiation?
👉UVA Radiation:
UVA accounts for up to 95% of the sun’s radiation that reaches the earth’s surface.
UVA can pe*****te (pass through) cloud cover and most glass and plastic.
UVA remains at more-or-less consistent levels during daylight hours, all year round.
UVA radiation is responsible for tanning of the skin.
UVA is responsible for around 80% of the visible signs of ageing.
UVA pe*****tes the middle layer of the skin called the dermis.
👉 UVB Radiation:
UVB accounts for only 5% of the sun’s radiation reaching the earth’s surface.
UVB cannot pe*****te glass, plastic or other materials.
UVB levels increase with altitude, proximity to the equator, during the spring and summer months and during each day from April to September, generally peaking between 11am and 3pm.
UVB is responsible for burning of the skin which is strongly linked to the development of melanoma.
UVB (in very small amounts) helps the body produce Vitamin D3.
UVB pe*****tes the outer layer of the skin called the epidermis.
‼ What do UVA and UVB have in common?
Damage from both UVA and UVB is cumulative and irreparable. Both cause damage to the skins cells, which over time can cause the cells to mutate, grow out-of-control and form malignant tumours known as skin cancer.
UVA and UVB are responsible for 90% of skin cancers, which collectively form the most commonly diagnosed cancer in the UK and worldwide.
In the spring and summer months UVA and UVB pose a combined threat.
‼ Turning any kind of red or brown through exposure to UVA and UVB is a visual warning sign of sun damage and is you’re skin’s way of alerting you that damage is occurring beneath the skin’s surface!
Protection against UVA and UVB is vital for skin health:
💪 Cover up with clothing a hat & sunglasses, seek shade and apply SPF30+ sunscreen with UVA protection liberally and evenly, at least every 2 hours!
💛 Prevention is better than cure!
- every month is