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Product summary

Judging from the ingredient list, "Cirem Skincare - Youthboost Diamond Moisturizing Cream" 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. Panthenol, glycerin, sodium hyaluronate, aloe barbadensis extract and butylene glycol in this product (humectants) attract water molecules to the upper layer of the skin (the water comes from the outside air or from the deeper layers of the skin if the air is dry). Caprylic/capric triglyceride, c12-15 alkyl benzoate, caprylyl glycol, glyceryl stearate and stearic acid in this product help decrease the water evoporation from the skin, so that it stays hydrated for longer. These ingredients also soften the skin and take away the feeling of tightness and dryness.

Ingredient callouts

  • this moisturizer includes a form of retinoids (vitamin A) - retinyl palmitate 0.40% - 0.60%, but this type of vitamin A is not very effective. It could in theory help with fine lines and wrinkles, but the effect is most likely minimal.
  • We like that this moisturizer contains peptides (palmitoyl tripeptide-5 0.45% - 0.70%). There are many different kind of peptides and they are naturally present in our skin. They all are a combination of amino-acids. Some of them work as natural anti-biotics, promote wound-healing and production of collagen. The science is still not settled on how effective peptides in skincare are, but it is very likely that they have a benefit. Peptides might help restore the skin barrier and fight the signs of aging. At the very least, peptides work as humectants: they attract water to the upper layer of the skin and improve its hydration.
  • This formulation also includes panthenol (pro-vitamin B5) at about 1.90% - 2.30% concentration. In this concentration, panthenol works effectively to improve the skin barrier and reduce inflammation.

Irritation risk

There are some common irritants in this product, including ingredients that do not have benefits for the skin. We assess the overall irritancy of this moisturizer to be medium. 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.


The product retails for 70.00$ in the United States.

For a detailed price comparison: click here.