Using Minoxol Aqua in Distilled Water for Scalp Spray

Asked by: zay.za.club On: June 09, 2026 Product Type: Cosmetics Answered

Question

Minoxol Aqua™ (Pyrrolidinyl Diaminopyrimidine Oxide Oxothiazolidinecarboxylate) - 5 gram
Cosmetics

Can this be dissolved in distilled water and sprayed directly on the scalp?

What is the maximum mixing percentage?

Is it necessary to add anything else?

Answer

Yes, this is the matched product: Minoxol Aqua™ (Pyrrolidinyl Diaminopyrimidine Oxide Oxothiazolidinecarboxylate).

  • It is directly water-soluble, so it can be dissolved in distilled water.
  • Recommended use level from our product data: 0.5-2.0%, with 2.0% as the best/recommended level. Do not exceed 2.0%.
  • Recommended formula pH: 3.5-6.5.

For a scalp spray, it is not recommended to dissolve only in distilled water and keep using it without anything else, because a water-based product can grow microbes. At minimum, the formula should include:

  1. Broad-spectrum preservative suitable for leave-on water-based products.
  2. pH check/adjustment so the finished spray stays around pH 3.5-6.5.
  3. Optional supporting ingredients such as humectant/skin-feel agents can be added, but they are not mandatory for the active itself.

Example calculation:

Finished product size Minoxol Aqua™ at 2.0% max
100 g 2 g
250 g 5 g
500 g 10 g

So if you have 5 g, using all of it at the maximum 2% would make about 250 g of finished scalp spray. If mixed into only 100 g/ml water, it would be about 5%, which is above the recommended maximum.

For the raw material, store in a cool place and avoid heat, humidity, and sunlight.