Kosas 10 Second Eyeshadow


10 Second Eyeshadow

0.20 fl. oz. for $ 28.00
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Brand Overview

10 Second Eyeshadow by Kosas has a water-like consistency that’s unlike traditional powder shadow. While we found it easy enough to work with, not everyone will love this type of texture. But the real dealbreaker is that the formula contains some potentially irritating ingredients, as we’ll explain in more detail below.

You’re instructed to shake 10 Second Eyeshadow before use to disperse the pigments evenly and then apply it with the sponge tip wand. The watery formula can go on in a very thin, sheer layer or you can build it up for richer intensity. Either way, it dries down within a reasonable amount of time and meshes seamlessly like a second skin, rather than looking powdery or heavy.

If you’re not used to this kind of texture it takes some experimenting to get the hang of it, but once you do, it’s easy to blend out with your fingertips for softer edges. We were also able to blend a powder shadow over it in areas that we wanted to add more dimension.

Don’t interpret claims that this is a “crease-resistant formula” to mean you won’t having any creasing at all if you’re normally prone to such. You’ll still experience that as you typically would—no more, no less—but you can pair this with an eyeshadow primer to avoid the issue altogether. Otherwise, the color holds up well with no flaky fallout.

The color range includes satin, shimmer, and glitter finishes. We tested the “Globe” shade, which the brand describes as a shimmery neutral champagne—in reality it’s more of a metallic bronze with tiny flecks of golden sparkle. We ended up loving the gleaming color, even though it didn’t fit the description or swatches online whatsoever. Keep in mind that the same may be true of some of their other shades. (If you’ve tried any of those, share your thoughts in the Community Reviews section.)

But alas, the orange fruit extract and alcohol (the second and fourth ingredients respectively) are what gets 10 Second Eyeshadow into real trouble. Both of those ingredients have the potential to irritate skin, which is especially bad news for the extra delicate eye area. (See More Info for the research-backed explanation.)

The irritancy factor gives us real hesitation in recommending 10 Second Eyeshadow. Even if we personally liked the way this shadow looked, the gamble of what it could do to your skin is a risk… and it’s one you don’t have to take considering there are plenty of other great eyeshadows out there.

  • Meshes seamlessly like a second skin, rather than looking powdery or heavy.
  • Zero flaky fall out.
  • Formulated with potential skin-sensitizers (orange fruit extract and alcohol).
  • Shade range can be tricky to navigate online.
  • Watery texture won’t be everyone’s cup of tea.

Irritating Ingredients: We cannot stress this enough: Sensitizing, harsh, abrasive, and/or fragrant ingredients are bad for all skin types. Daily application of skincare products that contain these irritating ingredients is a major way we unwittingly do our skin a disservice. 

Irritating ingredients are a problem because they can lead to visible problems, such as redness, rough skin, dull skin, dryness, increased oil production, and clogged pores, and they contribute to making signs of aging worse.  

Switching to non-irritating, gentle skincare products can make all the difference in the world. Non-irritating products are those packed with beneficial ingredients that also replenish and soothe skin, without any volatile ingredients, such as those present in fragrance ingredients, whether natural or synthetic. 

A surprising fact: Research has demonstrated that you do not need to see or feel the effects of irritants on your skin for it to be suffering, and visible damage may not become apparent for a long time. Dont get lulled into thinking that if you don’t see or feel signs of irritation, everything is OK. 

Generally, its best to eliminate, or minimize as much as possible, your exposure to ingredients that are known to irritate skin. There are many completely non-irritating products that contain effective ingredients, so theres no reason to put your skin at risk with products that include ingredients research has shown can be a problem.  

References for this information:
Annals of the Brazilian Journal of Dermatology, July-August 2017, pages 521-525
Journal of Dermatological Sciences, January 2015, pages 2836
International Journal of Cosmetic Science, August 2014, pages 379385
Clinical Dermatology, May-June 2012, pages 257262
Aging, March 2012, pages 166175
Chemical Immunology and Allergy, March 2012, pages 7780 
Skin Pharmacology and Physiology, June 2008, pages 124135
Food and Chemical Toxicology, February 2008, pages 446475
American Journal of Clinical Dermatology, 2003, pages 789798 

Jar Packaging: No
Tested on animals: No

A clean, water-based, fast-drying, crease-resistant formula, for buildable, high-impact color that stays all day.  

Water, Citrus Aurantium Dulcis (Orange) Fruit Extract, Mica, Alcohol, Diglycerin, Silica, Simmondsia Chinensis (Jojoba) Seed Oil, Galactoarabinan, Oryza Sativa (Rice) Starch, Glyceryl Caprylate, Tin Oxide, Potassium Sorbate, Cetyl Alcohol. May Contain: Titanium Dioxide (Ci 77891), Iron Oxides (Ci 77491, Ci 77492, Ci 77492, Ci 77007), Ultramarines.

Launched in 2015, Kosas prides itself as a no-fuss makeup line infused with beneficial ingredients. The brand’s founder, Sheena Yaites, says the name Kosas was inspired by the philosophy of the five “kosas” of self: “A physical layer, a vitalizing layer of energy, a sensory mental layer, a discerning intellectual layer, and a layer of truthful bliss.” As she puts it, “Beauty lives in each of these layers, not just in the physical.”

The brand leans heavily into a clean beauty focus, which as they claim utilizes, “the best of molecular biology to create better products that are not only safe and non-toxic, but truly effective and beneficial too.”

While we applaud the concepting behind producing safe, effective products, Kosas tends to veer off course by formulating with fragrant botanicals that haven been proven to irritate skin. On the other hand, they also use some great antioxidants and replenishing ingredients, so it’s truly a mix of good and bad.

While some formulas fare better than others, the actual aesthetics and performance of the makeup tends to live up to the hype, and Kosas’ ethos of “effortlessly applied, flattering across skin tones” products reigns true for the most part.

All in all, Kosas is one of those lines that leaves us with mixed feelings. Judging simply by looks, it’s great. But a deeper dive into the formulas can be disappointing at times.

Check out the individual reviews for the full scoop on each product, and visit kosas.com to learn more about brand.

About the Experts

The Beautypedia team consists of skin care and makeup experts personally trained by the original Cosmetics Cop and best-selling beauty author, Paula Begoun. We’re fascinated by skin care and makeup products and thrilled when they meet or exceed our expectations, but we’re also disappointed when they fail to perform as claimed, are wildly overpriced, or contain ingredients scientific research has proven can hurt skin.

Our mission has always been to help you find the best products for your skin, no matter your budget or preferences. Beautypedia’s thorough and insightful reviews cut through the hype and provide reliable recommendations for all ages, skin types, and skin tones.

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