Hair Spray Formulation Inquiry

Regarding your formula using Purified Water, Polysorbate 80 (Tween 80), and fragrance oil:

1. Can this formula be used as a hair spray?
   Yes, this basic formula can create a fragranced water-based spray. Polysorbate 80 acts as a solubilizer, helping to disperse the fragrance oil evenly in the water. However, this formula is primarily for adding scent to hair. It does not provide typical hair spray benefits like hold, conditioning, or shine, as it lacks polymers or other functional hair care ingredients.

2. Is it dangerous?
   The safety of this spray depends largely on the specific fragrance oil used and its concentration. Fragrance oils can sometimes cause scalp or skin irritation or allergic reactions in sensitive individuals. Polysorbate 80 is generally considered safe for cosmetic use within recommended usage rates (typically 1-20%). Purified water is safe. To minimize risk, use a cosmetic-grade fragrance oil at a low concentration suitable for leave-on hair products and perform a patch test before widespread use.

3. Can purified water be replaced with mineral water?
   It is not recommended to replace purified water with mineral water from sources like 7-Eleven for cosmetic formulations. Purified water (like distilled or de-ionized water) is free from minerals, salts, and microorganisms that are present in mineral water. These impurities in mineral water can potentially react with other ingredients in your formula, cause cloudiness or separation over time, and can also provide a breeding ground for bacteria or mold, affecting the stability and safety of your product. Using purified water ensures a cleaner and more stable formulation.