Kosas

Kosas Revealer Skin Improving Foundation SPF 25.

Sunscreen

About this product

A serum-style foundation with SPF 25 and 7.5% zinc oxide, designed to improve skin while providing coverage and sun protection across 36 shades.

Full ingredients

Zinc Oxide (7.5%), Water, Ethylhexyl Olivate, Octyldodecanol, Undecane, Polyglyceryl-2 Dipolyhydroxystearate, Glycerin, Mica, Calcium Sodium Borosilicate, Caprylic/Capric Triglyceride, Niacinamide, Polyglyceryl-3 Diisostearate, Galactoarabinan, Tridecane, Propanediol, Cetyl Alcohol, Glyceryl Oleate, Sodium Hyaluronate, Palmitoyl Tripeptide-5, Panthenol, Squalane, Caffeine, Arnica Montana Flower Extract, Artemisia Capillaris Flower Extract, Ethyl Ferulate, Sodium Gluconate, Polyhydroxystearic Acid, Maltodextrin, Pentylene Glycol, Lecithin, Hydrogenated Lecithin, Tocopherol, Phenethyl Alcohol, Titanium Dioxide (Ci 77891), Iron Oxides

Guru Score

78%

Yay

Early verdict · Few reviews so far

What the gurus are saying

The zinc oxide and niacinamide work together to calm inflammation and control oil while supporting the skin barrier, earning strong praise for acne-prone and deeper skin tones. The serum texture is lightweight but buildable, though it can be easy to apply too much if you're not careful with blending.

Synthesized from 2 expert reviews · most recent take June 2026

What they liked

Serum-style formula with niacinamide and zinc oxide
Wide 36-shade range
Buildable coverage, works well sheer

What they flagged

Easy to overdo, needs a light hand

Best for

Sensitive skin

Type

SunscreenLiquid

Key actives

Niacinamide Hyaluronic acidVitamin EPeptidesSPFSqualane

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Sephora → Amazon → Google →

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What the experts use it for.

The concerns the experts tie this product to, in their own words. Paid and founder takes don't count.

Breakouts and acne1 expert

“The verdict for me is an excellent daily foundation for acne-prone skin of color skin.”

Dr. Vanita Rattan, watch at 2:50

Excess oil and shine1 expert

“It's got niacinamide, which is sebum control.”

Dr. Vanita Rattan, watch at 2:50

Dark spots and post-acne marks1 expert

“It also helps with pigmentation suppression and barrier support.”

Dr. Vanita Rattan, watch at 2:50

Skin barrier support1 expert

“It also helps with pigmentation suppression and barrier support.”

Dr. Vanita Rattan, watch at 2:50

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Dr. Vanita Rattan

1.23M subs

✓Yay

"I'm loving the ingredients in this formula. It's got 7.5% zinc oxide, which is anti-inflammatory. It's got niacinamide, which is sebum control. It also helps with pigmentation suppression and barrier support. [...] It's a serum-style formulation. It's got a strong 36-shade range. The verdict for me is an excellent daily foundation for acne-prone skin of color skin."

Allie Glines

829k subs

✓Mixed

"I really liked the Kosas foundation. I feel like one is like a lighter formula, yeah, but it does have a little more coverage. [...] It's good, but it was easy to overdo. I really liked it just with a light layer."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Sunscreen filters

Sun protection is the best evidenced way to slow visible ageing, and the filters are what does the work. Mineral and chemical filters both protect when a product is applied thickly enough and often enough, which is where most people fall short rather than on the choice of filter.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is Kosas Revealer Skin Improving Foundation SPF 25?

A serum-style foundation with SPF 25 and 7.5% zinc oxide, designed to improve skin while providing coverage and sun protection across 36 shades.

Is Kosas Revealer Skin Improving Foundation SPF 25 worth it?

Mostly yes. 1 of the 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 78%.

What is Kosas Revealer Skin Improving Foundation SPF 25's Guru Score?

Kosas Revealer Skin Improving Foundation SPF 25 holds a Guru Score of 78%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.

Who is Kosas Revealer Skin Improving Foundation SPF 25 best for?

Kosas Revealer Skin Improving Foundation SPF 25 is generally suited to sensitive skin.

What is Kosas Revealer Skin Improving Foundation SPF 25 good for, according to the experts?

In their reviews, experts say Kosas Revealer Skin Improving Foundation SPF 25 is good for breakouts and acne (1 expert), excess oil and shine (1 expert), dark spots and post-acne marks (1 expert) and skin barrier support (1 expert).