Hand-Mixable, No-Heat Body Sunscreen Lotion Formula (SPF 30+)

Question

I would like to create a body sunscreen lotion that meets the following requirements:

Can be mixed by hand.
Does not require heat or a blender.
Provides SPF 30+ and UVA/UVB protection.
Is suitable for occasional sun exposure in daily life.
Can be applied after body lotion.

Initially, I was also interested in adding color and a glowy effect, but understand this may require formula structures (like Water-in-Oil or formulas with Wax) that need heat or blending. My priority is the hand-mixable, no-heat aspect with sun protection.

Could you please provide a suitable formula and mixing method?

MySkinRecipes Expert · Accepted Answer

Based on the conversation, you are looking for a body sunscreen lotion formula that can be hand-mixed without heat or a blender, provides SPF 30+ and UVA/UVB protection for occasional sun exposure, and can be applied after body lotion.

The staff confirmed that most sunscreen ingredients require heat for optimal performance, except for Tris-Biphenyl Triazine (Nano) (Product ID 998), which can be hand-mixed without heat or a blender.

You proposed a formula using this ingredient, and the staff reviewed it. The staff advised that your formula is suitable for hand-mixing without heat if you remove Alumina (SoftGlow). Alumina was intended for a glowy effect but is not suitable for this type of formula; achieving a good glowy effect typically requires formula types (like Water-in-Oil or formulas with Wax) that do require heat or blending, which goes against your requirement for a non-heated, hand-mixed product.

Therefore, based on the staff's feedback, the recommended formula for a hand-mixed, no-heat sunscreen lotion (excluding the glowy effect) is as follows:

Recommended Formula:

Group A (Water Phase):
- Water: 85% (Adjusted from 70% to make total 100% after removing Alumina)
- Panthenol (Product ID 111): 1%
- Tris-Biphenyl Triazine (Nano) (Product ID 998): 10%
Group B (Emulsifier):
- Satin Cream Maker (Product ID 247): 1%
Group C (Oil Phase):
- Vitamin E (Product ID 65): 0.1%
- Avocado Oil (Product ID 91): 1.9%
Group D (Preservative):
- Mild Preserved Eco (Product ID 1001): 1%

Total: 100%

Mixing Method (Hand Mix, No Heat):

Mix ingredients in Group A together until uniform.
Add Group B (Satin Cream Maker) to Group A and mix until a creamy texture is achieved.
Mix ingredients in Group C together, then add the mixture to the cream base (from step 2) and mix well until fully incorporated.
Add Group D (Mild Preserved Eco) and mix until uniform.

Regarding the SPF value, the formula uses 10% Tris-Biphenyl Triazine (Nano). While the exact SPF depends on the final formulation and testing, this concentration is generally expected to provide broad-spectrum protection suitable for your stated needs (SPF 30+ for occasional sun exposure).

To achieve a glowy effect, as discussed, it would require a different formula structure that typically needs heat or blending, which is not possible with your current requirements.