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Product summary

Judging from the ingredient list, "Cetaphil - Optimal Hydration Skin Replenishing Water Gel" works well for improving skin hydration The formulation is based on a combination of good humectants and emollients. Both are needed to increase the skin hydration level. Humectants in this product (panthenol, urea, anhydroxylitol, glycerin and hydrolyzed hyaluronic acid) help to increase the water content in the upper layer of the skin. (These ingredients do so by "capturing" water molecules from the outside air or from within the deeper layers of the skin). Emollients in this formulation (dimethicone, caprylyl glycol, octyldodecanol and pentylene glycol) help to reduce the moisture loss from the skin. They also soften the skin surface and relieve the feeling of dryness and tightness.

Ingredient callouts

  • We particularly like that there is a good concentration of Niacinamide (1.70% - 2.50%) in this moisturizer. Niacinamide is a well-studied multi-tasking active. It is a great ingredient to have in a moisturizer. It is stable, and can work well in almost any hydrating formulation. There is solid evidence that Niacinamide can help support skin barrier, regulate oil production and reduce acne and clogged pores. It also helps to fight photodamage and help improve the skin tone, reducing pigmentation marks.
  • Panthenol (pro-vitamin B5) at about 2.10% - 3.10% concentration. In this concentration, Panthenol works effectively to improve the skin barrier and reduce inflammation.
This product contains ingredients that could be beneficial, but their concentrations are too low in this formulation: allantoin

Irritation risk

There are actives in this product that can be irritating. We assess the overall irritancy of this moisturizer to be low. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.