Using Alcohol as a Preservative
When I began to make products for sale in retail shops, Medium to long haircuts with side swept bangs I needed to find ways to make them more stable. Although products containing alcohol are not suitable for all skin types, they are often appropriate for oily and large-pored skin. Many of the water based preparations in this section are preserved with alcohol. You can choose to omit the alcohol, but in so doing you reduce the shelf life of the product from many months to just a few days. I am a firm supporter of making the freshest possible products for body care, but when an extended shelf life is desirable, or if you are making products for skin that responds positively to diluted alcohol, this information will prove beneficial.
Using Alcohol as a Preservative Basic Formula
As a general rule, 1/2 cup water-based liquid such as juice or an infusion will be preserved by 1 cup of 80 proof liquor. A product needs to contain 15-20 percent alcohol to stay preserved.