A label that ensures a Photostability booster effect
Today, high SPF and UVA are increasingly in demand with increased consumer awareness of the risks of exposure to harmful UV rays. Several solutions are possible for this, including improving the photostability of sunscreen products, avoiding the use of a large quantity of UV filters in the formula. In addition, their effectiveness allows a normal level of use in formulations of 1 to 3% on an active basis.
Although boosters can reduce the loss of effectiveness of sun protection after exposure to UVs, photostability 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 “Photostability Booster”.
EXAMPLE OF THE MODE OF ACTION OF "PHOTOSTABILITY BOOSTER"
+ Photo-stabilizers or stabilizers
+ Light scattering agents
+ Dispersing agents
+ Encapsulation technologies
Therefore, SUNCERT offers to certify raw materials claiming an effect “PHOTOSTABILITY BOOSTER”.
For this, the following criteria shall be respected:
Results, using a placebo and a dose effect, demonstrating:
– improvement of the Photostability of at least 15% and at a minimum of 10 points by using the ingredient at a minimum concentration (generally ≤ 5%),
– improvement of the Photostability of at least 30% and at a minimum of 15 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 Vitro method.
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.