Lightweight Water-Resistant Tone-Up Sun Serum (SPF 30) Formulation

Asked by: nararat.maq On: January 23, 2026 Product Type: Cosmetics

Question

Please provide a formulation and the required percentages for a body sunscreen with the following specifications:

  • SPF 30
  • Tone-up effect: Slight skin brightening.
  • Texture: Lightweight Sun Serum feel.
  • Properties: Water-resistant.
  • Filters: Incorporate Chemical filters to ensure a non-greasy, light texture.
  • Ingredients: Affordable and available for purchase at MySkinRecipes.

Answer

This formula for a Tone-Up Sun Serum (SPF 30) is designed to be lightweight, non-greasy, and water-resistant, providing a natural brightening effect for the body.

Tone-Up Sun Serum Formula (SPF 30)

Oil Phase:

  • OMC (Octinoxate): 7% (Chemical UVB Filter)
  • Titanium Dioxide 200nm EasyDisperse™: 3% (Physical Filter for Tone-up effect)
  • Cyclopentasiloxane: 5% (Light silicone for a silky, non-greasy feel)
  • Light Cream Maker™: 1.5% (Emulsifier for serum/lotion texture)

Water Phase:

  • Water: 77.5%
  • Glycerin: 3% (Humectant)

Final Phase (Cool Down):

  • WaterGuard™ Spray: 2% (Film former for water resistance)
  • Broad-spectrum Preservative: 1% (e.g., Phenoxyethanol)

Mixing Instructions:

  1. Prepare the Oil Phase: Mix OMC, Cyclopentasiloxane, and Light Cream Maker™ together. Add Titanium Dioxide 200nm EasyDisperse™ and stir until the powder is well-dispersed and no clumps remain.
  2. Prepare the Water Phase: Mix Water and Glycerin until uniform.
  3. Emulsification: Gradually pour the Water Phase into the Oil Phase while stirring continuously (using a high-speed mixer or blender is recommended) until a smooth serum texture is formed.
  4. Final Additions: Add WaterGuard™ Spray and the preservative. Mix thoroughly.
  5. Adjust pH: Check the pH; it should be around 6.0-7.0.

Key Features:

  • Tone-up Effect: The 200nm Titanium Dioxide provides a natural brightening effect without looking overly white or chalky.
  • Lightweight Texture: The combination of Light Cream Maker™ and Cyclopentasiloxane ensures the serum absorbs quickly and feels light on the skin.
  • Water Resistance: WaterGuard™ Spray helps the sunscreen stay on the skin even when sweating or exposed to water.

  • Note: This formula provides an estimated SPF 30. For commercial distribution, professional SPF testing in a laboratory is required to confirm the exact protection level.*