Successful Sunscreen Formulation with EasyDisperse Zinc Oxide (No Grainy Texture)

Asked by: preme9294 On: January 10, 2015 Product Type: Cosmetics

Question

I previously made a sunscreen formula using micronized zinc oxide, and it resulted in a grainy texture that didn't emulsify properly after adding water. I tried adjusting the amounts of LipidSoft and Light Cream Maker and followed standard mixing procedures, but the issue persisted.

After discussing the problem and considering alternatives like DHHB, SPF Protect Ultra, and EasyDisperse zinc oxide (which I had previously experienced breakouts with at a higher concentration), I decided to retry the formula, but this time substituting the micronized zinc oxide with Zinc Oxide (EasyDisperse) at a lower concentration (9.2%).

I am reporting the successful result:

Formula:

  • Zinc Oxide (EasyDisperse) 9.2%
  • DHHB 2.5%
  • LipidSoft 13.8%
  • OMC 7.5%
  • Octocrylene 0.2%
  • Tocopheryl Acetate 0.1%
  • Light Cream Maker 0.2%
  • Water 65.9%
  • Disodium EDTA 0.1%
  • Eye Preserved 0.5%

The mixture did not become grainy and emulsified properly. I have already transferred it to a bottle.

I will report back later on the results after applying the product.

Answer

Based on the conversation, here is a summary of the issue and the final successful formula:

The user initially faced a problem when making sunscreen using micronized zinc oxide. The mixture became lumpy and did not emulsify properly after adding water, despite attempts to adjust the amount of lipidsoft and light cream maker and following standard mixing procedures. There was extensive discussion about the oil-to-water ratio, the amount of emulsifier needed, the dispersion of micronized zinc oxide, and alternative sunscreen ingredients like DHHB and SPF Protect Ultra, as well as concerns about potential breakouts from silicone-coated zinc oxide (EasyDisperse).

After trying various adjustments with micronized zinc oxide without success, and considering the previous issue with breakouts from a higher concentration of EasyDisperse zinc oxide, the user decided to try the formula again, but this time substituting the micronized zinc oxide with EasyDisperse zinc oxide at a lower concentration (9.2%).

This attempt was successful, and the user reported that the mixture did not become lumpy and emulsified properly.

Here is the successful formula using Zinc Oxide (EasyDisperse):

  • Zinc Oxide (EasyDisperse) 9.2%
  • DHHB 2.5%
  • LipidSoft 13.8%
  • OMC 7.5%
  • Octocrylene 0.2%
  • Tocopheryl Acetate 0.1%
  • Light Cream Maker 0.2%
  • Water 65.9%
  • Disodium EDTA 0.1%
  • Eye Preserved 0.5%

The user plans to report back on whether this formula causes breakouts after use.

Tags

Cream Grainy Texture Ingredient Alternatives Ingredient Suitability Sunscreen Formulation