Solubility of Sunscreen Ingredients (Tinosorb S, Ethylhexyl Triazone) in Alternative Solvents
Question
Regarding the solubility of high-performance sunscreen ingredients, specifically Tinosorb S (BEMT) and Ethylhexyl Triazone (EHT):
I understand from the previous discussion that it is very difficult to achieve high SPF and PA values without using OMC ([Octyl Methoxycinnamate]) due to its effectiveness in dissolving high-quality sunscreen ingredients like Tinosorb S and DHHB ([Diethylamino Hydroxybenzoyl Hexyl Benzoate]).
Could you please provide details on the solubility of Tinosorb S (BEMT) and Ethylhexyl Triazone (EHT) in alternative solvents such as Octocrylene, Octisalate, and Homosalate? I am looking for options to replace OMC in a sunscreen formulation.
Answer
Solubility of Sunscreen Ingredients
You are asking about the solubility of Tinosorb S (BEMT) and Ethylhexyl Triazone (EHT) in Octocrylene, Octisalate, and Homosalate as alternatives to OMC.
Based on the product information:
Tinosorb S (BEMT) has good solubility in Octisalate and Homosalate:
- Soluble up to 20% in Octisalate
- Soluble up to 16% in Homosalate
- Soluble up to 17% in OMC
- Soluble up to 12% in LipidSoft
Ethylhexyl Triazone (EHT) solubility data provided includes:
- Soluble up to 14% in OMC
- Soluble up to 13% in PPG-3 myristyl ether
- Soluble up to 6.2% in Fractionated Coconut Oil
- Soluble up to 4.4% in LipidSoft
Specific solubility data for Ethylhexyl Triazone in Octisalate or Homosalate is not available in the product description. As previously mentioned by the staff, the solubility of both Tinosorb S and Ethylhexyl Triazone in Octocrylene is very low.
As noted in our previous conversation, achieving high SPF and PA values in a formulation without using OMC can be challenging due to its effectiveness as a solvent for many UV filters, including high-performance ones like Tinosorb S and DHHB.
Related Products Mentioned
Octocrylene
