Anti-acne sunscreen composition, process for manufacturing an anti-acne sunscreen composition and use of an anti-acne sunscreen composition

A process for manufacturing an anti-acne sunscreen composition, comprising:

• (a) providing an anti-acne system, including a salicylic acid and at least one additional anti-acne ingredient selected from the group of capryloyl salicylic acid, hydroxyethylpiperazine ethane sulfonic acid, octadecenedioic, niacinamide and combinations thereof, wherein the anti-acne system is present in an amount ranging from 0.5% to 5% by weight, relative to a total weight of the composition;
• (b) providing an UV filter system, wherein the UV filter system is present in an amount ranging from 0.1% to 50% by weight, based on the total weight of the composition;
• and
• (c) providing a stabilizing polymer system selected from the group of xanthan gum, acrylates/C10-30 alkyl acrylate crosspolymer, and ammonium acryloyldimethyltaurate/vp copolymer, and combinations thereof, wherein the stabilizing polymer system is present in an amount ranging from 2% to 5% by weight, based on the total weight of the composition,
• wherein the process comprises the steps of:
• Step (A):
• add oily phase;
• then
• Step (B):
• heat up to 75° C.;
• then
• Step (C):
• mix well;
• then
• Step (D):
• add oily actives which includes at least one additional anti-acne ingredient;
• then
• Step (E):
• mix well;
• then
• Step (F):
• add TiO2;
• then
• Step (G):
• mix well;
• then
• Step (H):
• transfer side phase B in an aqueous phase for 10 min;
• then
• Step (I):
• emulsify;
• then
• Step (J):
• gelification by adding the stabilizing polymer system;
• then
• Step (K):
• add phase E by neutralization;
• then
• Step (L):
• mix well;
• then
• Step (M):
• check pH and adjust, if necessary, when pH target ≥6.0;
• then
• Step (N):
• add phase F via fillers;
• then
• Step (O):
• mix well until homogeneous;
• then
• Step (P):
• add phase G via a filter;
• then
• Step (Q):
• mix well;
• then
• Step (R):
• add phase H which includes salicylic acid and alcohol;
• mix well;
• and then
• Step(S):
• end of batch.

A method of using an anti-acne sunscreen composition, comprising:

• applying the anti-acne sunscreen to skin, the anti-acne sunscreen comprising:
• (a) an anti-acne system, including a salicylic acid and at least one additional anti-acne ingredient selected from the group of capryloyl salicylic acid, hydroxyethylpiperazine ethane sulfonic acid, octadecenedioic, niacinamide, and combinations thereof, wherein the anti-acne system is present in an amount ranging from 0.5% to 5% by weight, relative to a total weight of the composition;
• (b) an UV filter system, wherein the UV filter system is present in an amount ranging from 0.1% to 50% by weight, based on the total weight of the composition;
• and
• (c) a stabilizing polymer system selected from the group of xanthan gum, acrylates/C10-30 alkyl acrylate crosspolymer, and ammonium acryloyldimethyltaurate/vp copolymer, and combinations thereof, wherein the stabilizing polymer system is present in an amount ranging from 2% to 5% by weight, based on the total weight of the composition.