A label that ensures a SPF booster effect
Today, high SPF and UVA are increasingly in demand with increased consumer awareness of the risks of exposure to harmful UV rays. To increase the value of SPF and UVA by avoiding the use of a significant amount of UV filters in the formula, sunscreen boosters (also called “SPF booster” or “UV booster”) have become popular to improve the effectiveness and add interesting properties for the skin. In addition, their effectiveness allows a normal level of use in formulations of 1 to 3% on an active basis.
Although they can significantly increase this SPF and/or UVA efficiency depending on the formulation and types of sunscreens used, UV boosters are not UV filters because they, alone, do not significantly contribute to SPF or UVA. To this end, a wide range of raw materials has been developed and it is difficult to clearly distinguish a good “SPF Booster”.
EXAMPLE OF THE MODE OF ACTION OF "SPF BOOSTER"
+ Photo-stabilizers or stabilizers
+ Light scattering agents
+ Texturizing agents
+ Dispersing agents
+ Encapsulation technologies
Therefore, SUNCERT offers to certify raw materials claiming an effect “SPF BOOSTER” and/or “UVA BOOSTER”.
For this, the following criteria shall be respected:
Results, using a placebo and a dose effect, demonstrating:
– improvement of the SPF and/or UVA of at least 20% and at a minimum of 5 points by using the ingredient at a minimum concentration (generally ≤ 5%),
– improvement of the SPF and/or UVA of at least 40% and at a minimum of 10 points by using the ingredient at a minimum concentration (generally ≤ 10%).
The results with submission of the reports shall be evaluated in two different laboratories using:
– In Vivo method (minimum 5 valid human volunteers).
An absorbance curve demonstrating minimal absorbance of the ingredient in UV with information on E (1; 1) at λmax.
A description of how this MP works.