As with all cosmetic and bath and body products, proper sterilization and good manufacturing practices should be followed.
11 oz distilled water
4 oz witch hazel
1/2 ounce Polysorbate 80 https://americansoapsupplies.com/product/polysorbate-80/
2-4 teaspoons fragrance oil or essential oil
1 teaspoon liquid glycerinhttps://americansoapsupplies.com/product/vegetable-glycerin/
Preservative of choice
Mix Poly 80 and fragrance together and put aside.
Combine Distilled water, witch hazel and glycerin, and mix. Add fragrance/poly 80 and mix again.
Add preservative of choice using preservative guidelines
Recipe yields 16 oz finished product