top of page

145. ☀️ Sun Protection Factor ☀️ What’s your magic number?

A recipe for SPF (sun protection factor) includes ingredients in the products, the broad spectrum protection and also the skin's natural burn time.


Knowing your personal equation is easy...how long would it take you to burn in natural sunlight without protection?  

For example, for a fair skin it may be 10 minutes burn time, so by adding an SPF15 to the equation the skin is protected for 150 minutes (10 x 15 =150).


There are two types of sunscreen, a physical which physically reflects the sun from the skin and a chemical which allows the rays to penetrate into the skin.

The ultra violet rays create a heat sensation that creates a chemical reaction in the skin which deactivates the rays helping to prevent sun damage.  

For sensitive skins it is important to wear a physical sunscreen because this prevents the skin from reacting to the chemical reaction caused by the heat from the sun and the product.

Buying a broad spectrum sunscreen protects the skin against both UVB rays which are responsible for skin burning and present when the sun is out, and UVA rays which are responsible for ageing and present all year round. A broad spectrum sunscreen has the sun protection factor with a circle around it displayed on the bottle.  


Dermalogica’s protection 50 sport spf50 is my go to for the family - it’s high protection and gives 80 minutes water-resistant protection! It can be used on the face and body, in the summer and on holiday it’s our day cream and in every bag - honestly we don’t leave the house without wearing it - it’s in the beach bag, car centre console, swim bag, sports bag, by the front door, my handbag… it’s literally

☀️😎☀️ EVERYWHERE ☀️😎☀️ My boys have been using it since they were six months old and they’re now 9 & 11 - already over a decade of Dermalogica suncare!!


There are three classifications of broad spectrum sunscreen - low, medium, and high depending on the UV protection.  It is now required by the European Union that product ranges label their sunscreens with the broad spectrum symbol, protection factor and the level of protection.


Protection Levels:


😎 LOW SPF 6 - 10

😎 MEDIUM SPF 15 - 25

😎 HIGH SPF 30 - 50

😎 VERY HIGH SPF 50+


What do all of the numbers mean?

A general example of the percentage of skin protection is that an…


☀️ SPF 15 protects from 94% of UVA rays

☀️ SPF 30 protects from 97% of UVA rays

☀️ SPF 50 protects from 98% of UVA rays


All sunscreens block the UVB rays which are mostly from the sun, but it's the UVA rays that are important to remember to protect your skin from all year round. This can be done by ensuring your day cream has an SPF 30+. Sun protection higher than SPF 30 always a chemical component to ensure sunscreen protects the skin for an extended period of time.


If you'd like a personalised skincare prescription book a consultation with our expert www.dianarichardson.uk 


Thank you for reading, if this was useful please 🩵 and if it could help someone in your network, please share.


Thank you ~ Diana x

4 views0 comments

Recent Posts

See All

Comments


bottom of page