The strength of ingredients within a cosmetic solution.
Provided that, the concentration of an ingredient present in a certain cosmetic product is high—that ingredient will penetrate secretly through skin's protective barriers. This case is highly noticed when it comes to prescription-only cosmetics than over-the-counter cosmetics assuming that the same ingredient is present in both cosmetics.
How long do cosmetic ingredients stay on the skin's surface?
When a cosmetic product is applied directly on a skin, the quantity of ingredients that will be absorbed depends entirely on the amount of time these ingredients remain on a skin surface. For instance—we expect a skin to soak up more paraben preservatives from a moisturizer that remains on the skin for a long number of hours than from a facial cleanser in which ingredients quickly disappear after your face is washed off. Results also show that if you use an effort to rub a cleanser on your face—the rate of ingredients absorption will be higher.
Paraben preservatives are used in the chemical industry to kill bacteria and prevent growth of microorganisms for the purpose of protecting both consumers and products.
The amount of water in a cosmetic product.
The essential ingredients present in a variety of products such as skin creams, ointments and water-in-oil-emulsions are paraffin, oils and waxes. These ingredients increase a burst of skin's hydration. A highly hydrated skin absorbs chemicals at a greater rate since water is a subtle and natural penetration enhancer.
The health of skin.
The health of skin depends entirely on being strong and undamaged. This will prevent a lot of external toxic substances from entering into our bodies, since the absorption rate is lowered. Dermal absorption rate is fueled when you remove the epidermis layer through the use of facial scrub or peeling mask. Swollen acne pimples and inflamed skin will absorb benzoyl peroxide one millimeter away than healthy skin.
The area where we apply cosmetic products.
Thinner skin like the one on our face absorbs ingredients twenty times faster than the thicker skin present in the palms of our hands.