Numbuzin

Numbuzin No.6 Deep Sleep Mask.

Masks & Peels

About this product

An overnight leave-on mask by Numbuzin designed to hydrate and restore skin while you sleep.

Full ingredients

Glacial Water (63%), Butylene Glycol, Propanediol, Glycerin, Niacinamide, 1,2-Hexanediol, Purified Water, Chlorella Vulgaris Extract, Xylitylglucoside, Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Xylitol, Melia Azadirachta Leaf Extract, Melia Azadirachta Flower Extract, Coccinia Indica Fruit Extract, Aloe Barbadensis Flower Extract, Solanum Melongena (Eggplant) Fruit Extract, Ocimum Sanctum Leaf Extract, Corallina Officinalis Extract, Curcuma Longa (Turmeric) Root Extract, Hyaluronic Acid, Glycereth-26, Panthenol, Pentylene Glycol, Glucose, Sodium PCA, Anhydroxylitol, Fructooligosaccharides, Fructose, Polyglyceryl-10 Laurate, Sodium Citrate, Dipotassium Glycyrrhizate, Sodium Hyaluronate Crosspolymer, Ethylhexylglycerin, Adenosine, Hydrolyzed Glycosaminoglycans, Citric Acid, Benzyl Glycol, Tocopherol, Xanthan Gum

Guru Score

68%

Mixed

4 experts · Moderate agreement

What the gurus are saying

Experts split sharply on this mask: some praise it as strong overnight support, while others see it as basically a standard serum with minimal visible change. Such divided feedback might suggest the product's performance genuinely depends on your specific skin type and needs. The lack of consensus here is worth keeping in mind before making this part of your nightly routine.

Synthesized from 4 expert reviews · most recent take May 2025

What they liked

Fragrance-free
Works as both mask and serum

What they flagged

Feels like a serum, not a dedicated mask

Best for

Dry skin

Type

Masks & PeelsCream

Key actives

Niacinamide Hyaluronic acidVitamin E

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Ulta → Amazon → Google → iHerb →

Opens a store search. We may earn from these links.

Scan it in the shopFree iPhone app. Scores in the aisle.

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

"Make sure you do your skincare 2 hours before bed to make sure this doesn't come off on your sheets. So in here we've got a bunch of humectants plus niacinamide and it's fragrance-free. I love it. This is a Navesafe product. Highly recommend it. If you're going through menopause, your skin is feeling really tight and dry, put this on. If you've got a damaged skin barrier after your moisturizer, put this on. I really like this. Well done. 10 out of 10 on this product."

CYoung

95k subs

~Nay

"It was hard to find a good product from this line. I don't see any good thing about it, it's just like a normal serum, it doesn't make that much difference."

Kelly Driscoll

90k subs

~Mixed

"This felt like it delivered medium hydration if you will. It was definitely not just sitting at the top of the skin, there was definitely a nice hydrating effect to this, replenishing, cooling, refreshing, but it just didn't feel like it lasted with me. It just didn't feel like it was working hard for my skin over time. [...] By a couple of hours after doing my routine I was starting to feel a little bit more dehydrated. [...] This definitely was not that. It can only do so much."

No BS Beauty

89k subs

~Yay

"Some dupes for the Sunday Riley B3 Nice, the first one is the Numbuzin No.6 Deep Sleep Mask serum. It's got the niacinamide, it's got the neem extract, it's got the holy basil, turmeric and aloe, and the nice thing about that one is it doesn't have a scent because the Sunday Riley one definitely has a scent."

All 2 takes from No BS Beauty

9 Skincare Products Better Than The Cerave Hyaluronic Hydrating Serum - Cruelty Free & Affordable!

"I've repurchased this once and it's the Numbuzin No.6 Deep Sleep Mask. It's 1.7 ounces, 50 milliliters, $24, it's fragrance free, has a little bit of a thicker serum texture. It contains sodium hyaluronate as well as other humectants. It also contains turmeric, aloe, and eggplant and it's quite lovely. They recommend using it as a sleep mask. I just use it as a serum and then I apply a moisturizer over it, that's kind of how I like using it."

K-Beauty Dupes for Sephora's Most Expensive Products - Affordable Alternatives

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

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

Vitamin E

Vitamin E is an antioxidant, and it is often in a formula to keep the other ingredients stable rather than as the active itself. It pairs well with vitamin C, though on its own the evidence for visible change is limited.

Source: NIH, National Library of Medicine

Frequently asked.

What is Numbuzin No.6 Deep Sleep Mask?

An overnight leave-on mask by Numbuzin designed to hydrate and restore skin while you sleep.

Is Numbuzin No.6 Deep Sleep Mask worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 68%.

What is Numbuzin No.6 Deep Sleep Mask's Guru Score?

Numbuzin No.6 Deep Sleep Mask holds a Guru Score of 68%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected.