2. ↑ Squalane. light emollient veg oil, can be antibacterial & moisturizing; might break out some people
4. ↑ Dipropylene Glycol. Dipropylene Glycol is used in skincare and cosmetics as a/an that masks the scent of other ingredients in a formula aka masking, fragrance, solvent to dissolve things in a formula, viscosity controlling ingredient.