Checking Anti-Acne Back Spray Formula and Mixing Procedure

Question

I want to make an anti-acne spray for the back. Here is the formula and mixing procedure I plan to use:

Ingredients:
[url=http://www.myskinrecipes.com/shop/whitening-%E0%B8%AA%E0%B8%B2%E0%B8%A3%E0%B9%83%E0%B8%AB%E0%B9%89%E0%B8%9C%E0%B8%B4%E0%B8%A7%E0%B8%82%E0%B8%B2%E0%B8%A7/833-3-o-ethyl-ascorbic-acid-%E0%B8%A7%E0%B8%B4%E0%B8%95%E0%B8%B2%E0%B8%A1%E0%B8%B4%E0%B8%99%E0%B8%8B%E0%B8%B5.html:3jabqwyu]Ethyl Ascorbic acid[/url:3jabqwyu] ([url=http://www.myskinrecipes.com/shop/whitening-%E0%B8%AA%E0%B8%B2%E0%B8%A3%E0%B9%83%E0%B8%AB%E0%B9%89%E0%B8%9C%E0%B8%B4%E0%B8%A7%E0%B8%8ข%E0%B8%B2%E0%B8%A7/833-3-o-ethyl-ascorbic-acid-%E0%B8%A7%E0%B8%B4%E0%B8%95%E0%B8%B2%E0%B8%A1%E0%B8%B4%E0%B8%99%E0%B8%8ซ%E0%B8%B5.html:3jabqwyu]Vitamin C Ethyl Ether[/url:3jabqwyu]) 3%
[url=http://www.myskinrecipes.com/shop/%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%8ก%E0%B8%AD%E0%B8%9a%E0%B9%80%E0%B8%8ค%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%AA%E0%B8%B3%E0%B8%AD%E0%B8%B2%E0%B8%87%E0%B8%8ค%E0%B9%8C/184-disodium-edta-2na.html:3jabqwyu]Disodium EDTA[/url:3jabqwyu] 0.2%
[url=http://www.myskinrecipes.com/shop/%E0%B8%AA%E0%B8%B2%E0%B8%A3%E0%B8%AA%E0%B8%8ก%E0%B8%B1%E0%B8%94%E0%B8%98%E0%B8%A3%E0%B8%A3%E0%B8%A1%E0%B8%8a%E0%B8%B2%E0%B8%95%E0%B8%B4/217-tea-tree-oil-water-%E0%B8%99%E0%B9%89%E0%B8%B3%E0%B8%A1%E0%B8%B1%E0%B8%99%E0%B8%97%E0%B8%B5%E0%B8%97%E0%B8%A3%E0%B8%B5-%E0%B8%AD%E0%B8%AD%E0%B8%A2%E0%B9%8%8C%E0%B8%8a%E0%B8%99%E0%B8%B4%E0%B8%94%E0%B8%A5%E0%B8%B0%E0%B8%A5%E0%B8%B2%E0%B8%A2%E0%B9%83%E0%B8%99%E0%B8%99%E0%B9%8%8้%E0%B8%B3.html:3jabqwyu]Tea Tree Oil (Water Soluble)[/url:3jabqwyu] 2.5%
[url=http://www.myskinrecipes.com/shop/%E0%B8%A3%E0%B8%B1%E0%B8%8ก%E0%B8%A9%E0%B8%B2%E0%B8%AA%E0%B8%B4%E0%B8%A7/2014-complex-salicylic-acid-powder-water-soluble.html:3jabqwyu]Complex Salicylic Acid (Powder, Water-Soluble)[/url:3jabqwyu] 2.5%
[url=https://www.myskinrecipes.com/shop/%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%8ก%E0%B8%AD%E0%B8%9a%E0%B9%80%E0%B8%8ค%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%AA%E0%B8%B3%E0%B8%AD%E0%B8%B2%E0%B8%87%E0%B8%8ค%E0%B9%8์/143-glycerin-%E0%B8%8ก%E0%B8%A5%E0%B8%B5%E0%B9%80%E0%B8%AA%E0%B8%AD%E0%B8%A3%E0%B8%B5%E0%B8%99.html:3jabqwyu]Glycerin[/url:3jabqwyu] 99.5% 5%
Water 85.5%
[url=http://www.myskinrecipes.com/shop/%E0%B8%AA%E0%B8%B2%E0%B8%A3%E0%B8%8ก%E0%B8%B1%E0%B8%99%E0%B9%80%E0%B8%AA%E0%B8%B5%E0%B8%A2/1001-ethylhexylglycerin-caprylyl-glycol.html:3jabqwyu]Mild Preserved Eco[/url:3jabqwyu] 1%

Mixing Procedure:
Gradually add the ingredients to water and stir or mix until dissolved.

Are this formula and mixing procedure correct?

MySkinRecipes Expert · Accepted Answer

The formulation you provided for an anti-acne back spray seems suitable. The ingredients listed are appropriate for this type of product and are generally water-soluble, which is good for a spray formulation.

The mixing steps you described, which involve gradually adding ingredients to water and stirring until dissolved, are also generally correct for this simple water-based formula. It's usually best to add ingredients one by one, ensuring each is fully dissolved before adding the next.

Please note that the sum of the percentages you provided is 100.2%, which is slightly over 100%. You may want to double-check the percentages to ensure they add up to exactly 100%.