7) should have proper solubility products of a certain type, such as cosmetic products, cosmetics, perfume, gel-type should be used for water soluble than usual, etc.
7) should be dissolved, suitable for any type of cosmetic products in the cosmetics sector gel. Perfume should be soluble in water than normal and so on.
7) should have a solubility suitable for cosmetic products such as products of cosmetics category gel. Should use the perfume dissolve in water more than normal.