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Skin anatomy and physiology
We are most aware of the epidermal layer of skin, because it can frequently be too dry or too oily. The dry (stratum cornium) portion can be too thick, which causes a rough, dry, flaky feel to the finger tips. It may also be too thin, which causes tenderness and sensitivity to some products and chemicals. With the right products we can change the texture and quality of our skin.
The stratum cornium should be thick enough to protect, but thin and soft enough for that young, tender, smooth sensation. As we age it becomes harder to control that layer and we need help by using exfoliants , such as, La Roche Posay Physiological Ultra Fine Scrub or La Roche Posay Effaclar K acne treatment fluid , to remove the excess dead cells.
We would like to have a balance of oil and moisture in the skin. That is normally accomplished by the sebaceous (oil) and eccrine (sweat) glands , but because of aesthetics we bathe them away and, if not replaced, our skin can be too dry and coarse. To correct the resulting dryness we add moisturizers, like La Roche Posay Hydraphase Riche Facial Cream . If there is an excess of oil on our skin we frequently will have breakouts of pimples or acne, which require cleansers and astringents, represented here by La Roche Posay Deep Cleansing Foaming Cream and La Roche Posay Effaclar Toner astringent Lotion.