Sunscreen Formulation with Shea Butter: Texture and Stability Issues
Question
I am developing a sunscreen formulation using the following ingredients:
- Light Cream Maker
- Almond Oil
- Shea Butter
- SPF Protect Ultra™ 20%
- Water
Is it possible to create a stable sunscreen with these ingredients? What potential issues might arise, particularly regarding texture and separation?
Answer
Sunscreen Formulation with Shea Butter
Regarding your sunscreen formulation containing Light Cream Maker, Almond Oil, Shea Butter, SPF Protect Ultra™ 20%, and Water:
Based on the feedback provided, using Shea Butter in a sunscreen is possible, although it's generally not preferred due to its heavy texture, which is more common in night creams.
To help prevent the formula from separating over time, it is advised to keep the total amount of the oil phase (Almond Oil + Shea Butter + SPF Protect Ultra) below 40%, and ideally below 30% of the total formula.
Regarding the specific percentages for each ingredient and what else to add, I cannot provide precise amounts or suggestions. Determining precise ingredient percentages and recommending additional components for a formulation requires detailed knowledge of ingredient interactions, desired final product properties, and stability testing, which is beyond my current capabilities. I do not have a tool that can calculate the required amounts for the remaining ingredients based on a partial list or suggest other ingredients to add to this specific formula.
Therefore, while the formula is considered potentially viable with the noted limitation on the oil phase percentage, I cannot assist you with determining the exact percentages for each component or suggesting further additions.