Kiehl's Eye Fuel

"Kiehl's - Eye Fuel" is a well-rounded moisturizing product. As we expect from a proper moisturizer, the formula includes a combo of effective humectants and emollients. These are the two different types of ingredients that are essential for improving the skin hydration and supporting a healthy skin barrier. Glycerin, glycine soja protein and caprylyl 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). Palmitoyl tetrapeptide-7, dimethicone, peg-10 dimethicone, ethylhexyl palmitate and glycine soja protein 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

• We particularly like that there is a good concentration of niacinamide (niacinamide 3.20% - 3.90%) 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.
• We like that this moisturizer contains peptides (palmitoyl oligopeptide 0.20% - 0.40% and palmitoyl tetrapeptide-7 0.10% - 0.25%). 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.
• Adenosine 0.25% - 0.45% in this moisturizer adds an anti-aging benefit. Adenosine is a compound that in involved in many biological processes inside the skin cells. According one high-quality clinical trial, topical adenosine in low concentrations can help improve "deep wrinkles" - the wrinkles that appear with age in places where our faces are most dynamic (for example, on the forehead or in the corners of the eyes).

Irritation risk

This moisturizer contains some common irritants, including those without a benefit 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.

Price

The product retails for 73.50CA$ in Canada, for 156.77A$ in Australia, from 24.00$ up to 31.90$ in the United States and from 20.80£ up to 29.50£ in the United Kingdom.

For a detailed price comparison: click here.