111SKIN Eye Masks vs Face Masks vs Serums: Sizes, USD Prices and What the Brand Claims

By LuckyReviewer Editorial Team·October 26, 2026·6 min read

111SKIN sells three kinds of product that often end up in the same basket: under-eye masks, full-face sheet masks and serums or boosters. They are priced in different units (masks per box versus milliliters per bottle), so comparing them takes some arithmetic. This article lists each product on the brand's USA/Canada store with its sizes and USD prices, works out the price per mask or per milliliter, and quotes what the brand says each one is for, as the brand's claims rather than results we can confirm. For shipping, duties and returns, see our full 111SKIN review.

At a glance Checked October 2026

Eye masks are the cheapest entry point at about $14 to $17 per mask, face masks run about $27 to $28 per mask, and serums cost from about $7 per milliliter for the 20ml boosters to about $22 per milliliter for Black Diamond Serum.

Best for: Shoppers choosing between an occasional mask treat and a daily serum from the same brand.
Typical price: $60 for four eye masks, $85 for three face masks, $180 for 15ml of Repair Serum.
Watch out for: Pack-size prices differ between pages on some masks, and the eye mask listings do not say whether a "mask" is one pad or a pair.

How the three formats differ

Eye masks are individual under-eye pads. The Cryo De-Puffing listing says to apply "one mask under each eye," leave on for 20 minutes, then pat in the excess, morning or evening after cleansing.
Face masks are single-use full-face sheets in hydrogel or bio-cellulose, also worn for 20 minutes according to the listings.
Serums and boosters are bottles meant for regular use; the store sells them in 15ml, 20ml or 30ml sizes.

Eye masks, product by product

Cryo De-Puffing Eye Mask: 4 masks $60, 8 masks $115 in the store data. Hydrogel, "All Skin Types." Hero ingredients listed: seaweed extract, vitamin E and a peptide complex. The brand says "You'll see a visible difference after 20 minutes."
Celestial Black Diamond Eye Mask: 4 masks $60, 8 masks $120. The listing names hyaluronic acid, a peptide complex, retinol "delivered in small amounts" and Argireline. Material is not stated on the page.
Rose Gold Illuminating Eye Mask: 4 masks $60, 8 masks $115. Positioned to "revive tired eyes in minutes."
Age Defying Eye Mask: 3 masks $50, 8 masks $130. Described as having a lighter texture and "formulated to help firm skin while reducing the appearance of wrinkles."

Per mask, that is about $14.40 to $16.70. If each "mask" is a single pad and you use one under each eye, a four-mask box covers two treatments; the listings do not state this directly, so check the box count in the product photos before ordering. The Cryo product page also showed one $115 price next to both pack options, so confirm the price in your cart.

111SKIN Celestial Black Diamond Eye Mask box — Celestial Black Diamond Eye Mask (4 masks $60, 8 masks $120)

Face and neck masks, product by product

Celestial Black Diamond Lifting and Firming Face Mask: 3 masks $85, 5 masks $140. Hydrogel. The brand says its goji glycopeptides "help instantly tighten, diminish fine lines and lift and sculpt."
Y Theorem Bio Cellulose Facial Mask: 3 masks $85, 5 masks $140. Bio-cellulose, which the brand says "acts as a second skin." Hero ingredients: NAC Y², ectoin and centella asiatica. "All Skin Types," 20 minutes.
Rose Gold Brightening Facial Treatment Mask: 3 masks $85, 5 masks $135, 10 masks $240 (the 10-pack was unavailable). Hydrogel, positioned for radiance.
Cryo De-Puffing Facial Mask: 3 masks $85, 5 masks $135. A two-piece hydrogel mask that the brand says "de-puffs your morning face."
Black Diamond Lifting & Firming Neck Mask: 3 masks $75, 5 masks $125.
Related: Wrinkle Erasing Retinol Patches ($190 for three sets) use what the brand calls microcone technology and are worn overnight; the Contour Firming Mask (75ml, $175) is a liquid overnight mask and was unavailable.

Per face mask, the three-packs work out to about $28.30 and the five-packs to $27 to $28, so the larger box saves little per mask.

111SKIN Y Theorem Bio Cellulose Facial Mask box — Y Theorem Bio Cellulose Facial Mask (3 masks $85, 5 masks $140)

Serums and boosters, product by product

Repair Serum NAC Y²: 15ml $180, 30ml $350 (about $12 and $11.70 per ml). A gel-texture serum for "All Skin Types"; the page states "Clinically Tested: To Restore Healthy Skin In 2 Weeks*" without publishing the test.
Y Theorem Repair Light Serum NAC Y²: 30ml $350, described as "the perfect repair serum for oilier skin types and humid environments."
Black Diamond Serum: 30ml $650 (about $21.70 per ml), with microalgae extract and NovoRetin listed.
Black Diamond Retinol Oil: 30ml $260. The brand lists retinol and Granactive Retinoid with eight oils and claims "no irritation"; anyone sensitive to retinoids should patch test.
20ml boosters: Black Diamond Vitamin C Brightening Booster $155, Rose Gold Radiance Booster $135, Anti Blemish Booster $135 (salicylic acid) and Hyaluronic Acid Aqua Booster $135 (sold out), about $6.75 to $7.75 per ml. The Vitamin C listing says it is "clinically proven to improve skin brightness by 30% in 4 weeks," a brand claim with no study on the page.
Unavailable when checked: Dark Spot Correcting Serum (30ml, $350) and the Exosome Face Lift Treatment Set (2 x 30ml, $825).

111SKIN Repair Serum NAC Y2 bottle — Repair Serum NAC Y² (15ml $180, 30ml $350)

Choosing between them, and what to check

Occasional use: masks make sense for a single event or flight; a box of eye masks is the smallest outlay.
Daily use: a serum spreads its cost over weeks; the store does not say how many applications a bottle provides.
Claims: words such as "instantly," "clinically tested" and the percentage figures are the brand's marketing claims. They are not medical claims, and individual results vary.
Ingredients: several products contain retinol or acids. Read the full ingredient list and patch test, especially if you have sensitive skin.
Returns: only unopened products can be returned, within 28 days of delivery, so you cannot send back a mask or serum you have tried.

The store runs a Subscribe & Save program on some products. We did not find a public code we could verify; any working offers we find are listed on our 111SKIN coupons page.

Frequently asked questions

Which costs less per use, 111SKIN eye masks or face masks?

Eye masks, at about $14 to $17 per mask versus about $27 to $28 per face mask. If you use one pad under each eye, double the eye mask figure per treatment.

How long do you wear 111SKIN masks?

The Cryo De-Puffing Eye Mask and Y Theorem face mask listings both say 20 minutes. The Retinol Patches and Contour Firming Mask are described as overnight treatments.

What sizes does Repair Serum NAC Y² come in?

15ml for $180 and 30ml for $350 on the US store. It also appears in 15ml form in gift sets such as Reparative Icons and the Repair & Renew Routine.

The bottom line

On 111SKIN's US store, eye masks are the lowest-cost way in, face masks cost roughly twice as much per use, and serums are the bigger commitment, from $135 boosters to the $650 Black Diamond Serum. Compare by price per mask or per milliliter, treat the performance wording as the brand's claims, and confirm pack size in the cart.

See 111SKIN masks and serums

Disclosure: this article contains affiliate links. If you buy through them we may earn a commission, at no extra cost to you. Prices and policies were checked on the 111SKIN website at the time of writing and may change.