✅ Oxidation-Sensitive Formulas
Vitamin C serums, retinol creams, antioxidant-rich skincare.
Why? Air exposure degrades active ingredients.
✅ Light- or Air-Sensitive Products
Peptide treatments, hyaluronic acid, organic/natural cosmetics.
Why? Prevents discoloration and loss of potency.
✅ Preservative-Free Formulas
Clean beauty brands avoiding parabens/phenol preservatives.
Why? No air = less bacterial/fungal growth risk.