Holifrog Kosi Multi-Acid Mask (60 ml)
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Holifrog Kosi Multi-Acid Mask 60 ml
Holifrog Kosi Multi-Acid Mask with water droplets, smear of mask
Holifrog Kosi Multi-Acid Mask showing with model holding product


Kosi Multi-Acid Mask

SKU: 45355

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Brightens skin overall, diminishing hyper pigmentation and dullness, while restoring vibrancy to skin tone.

Penetrates below skin’s surface to repair damage on a cellular level, preventing the appearance of future damage and premature aging.


All good skincare routines could use a coach or point-person to keep your progress in check. Consider this mask your periodic skincare project manager or concierge, making quick work of issues like dullness, splotchiness, and any visible signs that you’re not drinking 64 ounces of water daily (who has the time?).

Kosi goes beyond superficial layers, reaching down to the cellular level to help prevent future skin damage as well — this is not just another exfoliating resurfacer. With a multi-functional acid blend, reparative antioxidants, and the power of algae and seaweed, this formula is meant to recharge skin back to its most vibrant, refreshed, and energized self.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


On a cleansed face, apply an even layer. After 10-20 minutes, rinse thoroughly with warm water and follow with Grand Amino Cushion Cream for best results. Use up to twice a week before bedtime. Do not use other exfoliating products in the same routine. Slight tingling and/or mild redness upon application may be experienced and is normal. Always wear sunscreen the morning after (but also every day in general).

WARNING: For external use only. Use as directed. Avoid contact with eyes.

SUNBURN ALERT: This product contains an alpha hydroxy acid (AHA) that may increase your skin’s sensitivity to the sun and particularly the possibility of sunburn. Discontinue use immediately if irritation occurs & consult a physician. Use sunscreen daily where AHA has been applied for a week afterwards. Product's contact with skin must be of limited frequency or duration.

Ingredients + Benefits

Key Ingredients:
10% AHA Blend: Lactic, Mandelic, Malic Acids are chemical exfoliators of various molecule sizes. They gently break down debris and dead skin cells loitering on the skin's surface.

8% PHA (Gluconolactone): An overachieving acid exfoliator that not only does what AHAs can do, but it’s gentler because it simultaneously hydrates skin with humectant properties.

2% BHA (Salicylic Acid): A larger-molecule exfoliator, this acid is oil-soluble, so it can actually penetrate pores to more deeply clear them of debris and gunk, including shrinking blackheads and whiteheads.

Diglucosyl Gallic Acid: This molecule is activated by your skin’s microbiome, partially transforming it into Tri Hydroxy Benzoic Acid, a natural melanin synthesis inhibitor. It has skin-brightening, anti-inflammatory, and photo protectant properties, which help to even-out and improve overall skin tone.

Peach Kernel Oil, Jojoba Seed Oil, Glycerin, Caprylic/Capric Triglyceride: These cushioning ingredients form a gel-oil base, a protective and nourishing buffer for the aforementioned acids to do their job without causing excess irritation. Think of them like gutter bumpers on a bowling lane.

Wakame Bioferment Advanced (Undaria Pinnatifida Cell Culture Extract): This unique seaweed-derived active is found in cultured wakame cells. It contributes to cell longevity by minimizing cellular damage within the mitochondria, which helps prevent the appearance of premature aging.

AcquaSeal Algae (Chlamydomonas reinhardtii extract): Derived from a particularly robust green algae that can thrive in extreme environments, this oil-soluble active produces a bioactive complex of lipids and fatty acids that renew and hydrate cells to promote cell proliferation and anti-inflammatory benefits.

N-Acetyl Glucosamine: A stable and effective form of biofermented glucosamine, this skin-identical ingredient helps reduce hyperpigmentation, increase the skin’s water content with hyaluronic acid, and maintain its barrier functions.

Magnesium: This mineral helps soothe inflammation in skin, protecting against free radical damage, and is necessary for the enzymes that regulate cell turnover and repair.

Antioxidant Blend: Turmeric Root Extract: a highly-soothing antioxidant that interrupts trigger signals in surface cells that lead to irritation. Ginkgo Biloba Extract: a potent antioxidant that protects skin from signs of premature aging and inflammation. Oat Kernel Extract: This super-soothing antioxidant is loaded with beta-glucan and lipids to protect and cushion skin. Melia Azadirachta (neem) Leaf Extract: This antioxidant has anti-microbial properties that diminish the population of harmful microbes on the skin's surface, reducing inflammation and calming the skin.

Full Ingredients:
Water (Aqua) (Eau), Gluconolactone, Prunus Persica (Peach) Kernel Oil, Lactic Acid, Glycerin, Isoamyl Laurate, Simmondsia Chinensis (Jojoba) Seed Oil, Bentonite, Malic Acid, Cetearyl Olivate, Salicylic Acid, Sorbitan Olivate, Undaria Pinnatifida Cell Culture Extract, Mandelic Acid, Chlamydomonas Reinhardtii Extract, Helianthus Annuus (Sunflower) Seed Oil, Disodium Acetyl Glucosamine Phosphate, Magnesium Chloride, Melia Azadirachta Flower Extract, Curcuma Longa (Turmeric) Root Extract, Ginkgo Biloba Leaf Extract, Avena Sativa (Oat) Kernel Extract, Isoamyl Cocoate, Lysolecithin, Silica, Sclerotium Gum, Potassium Sorbate, Xanthan Gum, Pullulan, Leuconostoc/Radish Root Ferment Filtrate, Sodium Hydroxide

Ingredients may be subject to change. The most accurate and up to date product ingredient list can also found on the product packaging.

Brand Info

Frogs have thin skin. It’s so soft and permeable that it absorbs everything in their surroundings. As a result, they can’t survive in toxic environments. Scientists even study them to monitor pollution levels.

Our skin is thicker than frogs but we live in toxic environments too, filled with free radicals, questionable air quality, and Twitter trolls. Even the thickest skin needs to take care of itself.

When we wash our faces, our pores are at their most open and permeable, like a frog’s. This stage of your skincare routine is essential to your skin’s health and the rest of your beauty regime. We use bioactive ingredients that give positive results—nothing toxic, nothing irritating.

It’s what thick and thin skin needs, when it needs it.

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