By Ray Tang, inventor of the patented Optifold double eyelid tape system, and the Optifold team · Updated 16 October 2026

Short answer: Cogit (株式会社コジット, Osaka) makes the two night-use eyelid tapes you will find in Japanese drugstores: ふたえ用アイテープ 夜用, a 2 mm × 4 m roll of washi tape that you cut to length yourself, and K-lab+ 韓国美容式アイテープ 夜用, a box of 60 pre-cut double-sided strips with a positioning guide. Both are a single strip, laid along the line where you want the crease, worn while you sleep and peeled off in the morning. Optifold is also worn overnight, but it is a two-piece system: an F-tape that sets the crease path on the extended, closed eyelid, and an N-tape that supports the fold through the night. Cogit is by far the cheaper way to try night tape. Optifold is the more structured one, and it costs several times more per month.

• Patented design
• Made in Canada from medical-grade, latex-free 3M tape
• Award-winning U of T startup (2018 HealthEdge Challenge)
• Free eyelid assessment and placement help
• Thousands of satisfied customers

Optifold vs. Cogit night eyelid tape at a glance

Why Optifold costs more than eyelid tape, and a fraction of double eyelid surgery

Most eyelid tape is made to be cheap and disposable: a strip that holds a fold for the day and goes in the bin at night. Optifold is built the other way round, as a premium nighttime system for people who want a double eyelid without surgery. This is what the price pays for.

Optifold vs. the cost of double eyelid surgery

In the United States, a 12-week Optifold pack costs less than 4% of the average surgeon's fee alone. Surgery is a medical procedure with anesthesia, a recovery period and a result that is hard to undo. Optifold is a cosmetic routine you do at home while you sleep: no incisions, no anesthesia, no downtime, and you can stop any night. It does not change the anatomy of the eyelid and results vary, which is exactly why many people try it before booking a consultation. More in Optifold vs. surgery.

Is Cogit night tape the same as Optifold?

No, although they are closer cousins than Optifold and a night glue. Both are tape, both go on at bedtime, both come off in the morning. The difference is the number of pieces and what each piece does. A Cogit night tape is one strip: a 2 mm sliver cut from the roll, or a pre-cut K-lab+ strip. You lay it where you want the crease and the adhesive holds that line of skin folded while you sleep. Optifold is two tapes with two jobs. The F-tape is placed along the crease path on the extended lid and decides where the fold happens; the N-tape goes over it and supports the fold while the eye is closed, so the crease stays put for the whole night rather than only until you roll over. Cogit gives you the first job only, in a simpler, cheaper form.

Cogit's two tapes also differ from each other. The roll is the longer-running product, a washi paper tape with a deliberately low-tack adhesive that Cogit says "does not burden the skin while you sleep". K-lab+ is the beginner version: pre-cut, double-sided, with a plastic eye guide that shows where the strip goes. The "韓国美容式" (Korean-beauty-style) in its name describes the look; the product is made by a Japanese company.

How does Cogit's night eyelid tape work, and how is it used?

For the roll, Cogit's store page and reviewers describe the routine like this: cut a short length with the included scissors, place it along the crease line you want on a clean, dry lid, press the fold in with the pusher, and sleep. In the morning you peel it off; several @cosme reviewers moisten it with lukewarm water first. Cogit's step-by-step text exists only as images on its store page, which we could not quote directly. For K-lab+, the Create SD listing says to line the strip up against the eye guide, press it on, use each strip once, and remove it with baby oil if it sticks. It also tells you to apply on clean dry skin only, not while in a moving vehicle, and to patch-test if you are allergy-prone.

The maker's claims are modest and consistent: "寝てる間にふたえのクセをつくる" (forms a double-eyelid habit while you sleep) for the roll, and "寝ながら理想の二重幅" (your ideal crease width while you sleep) and "アイガイド付で初心者でもカンタン" (easy even for beginners thanks to the eye guide) for K-lab+. Those are Cogit's statements; we have not tested either product.

What Cogit does well is plain from the facts. The roll is the cheapest night tape per night we know of in any market: one ¥1,100 roll holds 4 m of tape and lasts weeks even if you cut generously. Both products are made in Japan, sit on drugstore shelves next to the daytime tapes, and need no subscription or overseas shipping. The low-tack adhesive is a sensible choice for a product that spends all night on thin skin. Cogit has sold the roll for roughly two decades, and the K-lab+ eye guide is a genuinely useful idea for a first-timer.

What is different about how Optifold works?

Optifold starts from the observation that a crease you want to practise has two requirements overnight: the lid has to fold along the same path every night, and that fold has to be held while the eye is closed and relaxed. A single strip does the first part. The F-tape does it on the extended lid, where the crease path can be seen and traced before the tape goes on (the instructions have you trace it 10–20 times, then hold 2–3 minutes once placed). The N-tape then supports the fold from below so it is not undone by the pillow or by the lid relaxing in deep sleep. In the morning the N-tape comes off first, then the F-tape, in under a minute.

Because there are two pieces, each eye can be set differently: a slightly higher F-tape on the heavier lid, a different angle on the eye whose crease drifts outward. The two-piece construction is what the Japanese and Korean patents cover (JP6114471B2; KR101451199B1; inventor Raymond Tang), and it is why Optifold was one of four startups awarded a US$7,000 prize at the University of Toronto's 2018 HealthEdge Challenge, where U of T News described it as "a special tape to encourage double eyelids".

The adhesive is a medical-grade 3M adhesive and is latex-free. That is a statement of what it is, not a claim about safety relative to Cogit's tapes; K-lab+ lists natural rubber latex among its ingredients, which matters only if latex is something you react to. Optifold is a cosmetic product, not a medical device. It does not change the anatomy of the eyelid; it is designed to practise one crease path consistently, night after night.

Which costs more per month, Cogit or Optifold?

Optifold, by a wide margin, and we would rather say so plainly than bury it. On 16 October 2026 the Cogit roll listed at ¥1,100 MSRP and sold for ¥757–1,078 on Japanese sites; K-lab+ was ¥880 at Matsukiyo and Create SD. Used nightly, the roll costs anywhere from a few hundred yen a month to ¥1,100 if you somehow finished a roll in a month, and K-lab+ costs about ¥880 for roughly 30 two-eye nights. At ¥158 to the dollar that is US$2–7 per month. Optifold's 4-week pack is US$49.99 (about ¥7,900), or US$40.00 per 4 weeks if you buy the 12-week pack at US$119.99. A three-month trial of Cogit costs under ¥3,500; the same trial of Optifold costs about ¥19,000.

What the difference pays for is not more tape. It is the second piece, the illustrated placement method, the free assessment that tells you where your crease path probably sits before you spend a night on it, and the option of an advisor reviewing your eyelid videos through EyelidCare or the Results Guaranteed program. If your eyelids are straightforward, that may be more support than you need, and Cogit is the rational first purchase. If your lids are hooded, uneven or have already defeated a generic strip, the extra is what you are buying.

Can a 2 mm roll tape train a crease? Does night eyelid tape work at all (夜用アイテープ 効果)?

Cogit's reviews answer this honestly, in both directions. On @cosme, where the roll has 161 reviews, some users report a crease on the very first morning ("一日目で朝起きると二重になってました"), gentle release, and repeat purchases; one Japanese review site recommends the roll for heavier lids. The recurring negatives on the same page are that the instructions are hard to understand (one reviewer suggests this is why the rating is low), that the crease is shallow at first, and that it relaxes after about five days if you stop re-setting it. The roll format itself, cutting and positioning a 2 mm sliver by hand each night, is the other complaint.

So a thin strip can hold a fold overnight, and for some people that is enough to see a line in the morning. Whether it builds a crease that stays after the tape comes off is a different question, and it is where a single strip runs into its limits: it only works where you happened to place it, and nothing holds the fold if it lifts at 3 a.m. Optifold's published cases are individual, not averages: Cherry's uneven lids over several months, Alycia's move from mixed results to a stable crease, and Megan's diary through the discovery, training and steady phases. Results vary for any night product; the usual timeline is in how long it takes for a crease to stick.

Does night eyelid tape stretch your eyelids (夜用アイテープ まぶた伸びる)?

This is the most searched worry about night tape in Japan, and cosmetic-surgery clinics there publish columns warning that sleeping in glue or tape can irritate thin lid skin or leave the eye slightly open. Those columns are written by clinics that sell surgery, so read them as opinion, but the concern underneath is reasonable: anything adhesive on an eyelid for 8–9 hours should be low-tack, placed on clean skin, and released rather than ripped. Cogit addresses it with a weaker adhesive. Optifold addresses it with a latex-free 3M adhesive and a removal order that releases the skin from the F-tape before peeling. Neither product belongs on broken skin, during an eye infection, after eye surgery or on a lid that has started to droop on its own. What is and is not known about tape and loose lid skin is in the sagging question.

Which is better for beginners, Cogit or Optifold?

For a first, low-stakes try at night tape, K-lab+ is hard to argue with: ¥880, pre-cut, a guide that shows where the strip goes, available on the way home from work if you live in Japan. The roll is cheaper still but asks more of you, which its own reviews reflect. Optifold is a bigger first step in money and in reading. Against that, it is the only one of the three that tells you where your crease path should be before you start: the Find Your Best Fit questionnaire sorts eyelid types and says whether tape alone or tape with guidance is the better start, and the instructions show tracing and placement with photos. A beginner with an ordinary single lid may be fine with Cogit. A beginner with a hooded lid, one eye different from the other, or a crease that has already proved unstable usually needs the placement decisions a generic strip leaves to guesswork; our page on one double eyelid and one single shows what those look like.

Can you use Cogit night tape and Optifold together?

Not on the same lid on the same night; two adhesives stacked on an eyelid defeat the purpose of placing either one precisely. Alternating nights is also unwise while training, because the method depends on the same crease path every night and the two products place it differently. If you are moving from Cogit to Optifold, finish the Cogit box if you like, then start Optifold on clean skin after doing the assessment. A daytime tape for an event during a night routine is a different question, covered in daytime vs. nighttime eyelid tape.

Who should pick Cogit, and who should pick Optifold?

Cogit makes sense if you are in Japan or can buy from a Japanese retailer, you want to find out for under ¥1,100 whether you can sleep with tape on at all, your lids are on the lighter side, you are comfortable placing a strip by eye (or want the K-lab+ guide), and per-month cost matters more than guidance. It is the cheapest night tape in the category, made in Japan, with two decades on the shelf.

Optifold makes sense if you want the fold supported through the night and not just marked, your lids are hooded, heavy or uneven, you want crease height and angle adjustable per eye and repeatable, you want an assessment and the option of an advisor, and you are willing to pay several times more per month for that.

If you are not sure, the free Find Your Best Fit assessment takes a few minutes. Either way the habit is the same: the same line, every night, for months. Pick the tool you will actually keep using.

Sources

• Cogit official store (アイデア.com, 1616idea.com), product 413838, ふたえ用アイテープ 夜用: contents, materials, MSRP ¥1,100 — checked 16 Oct 2026
• Create SD online shop, JAN 4969133263705 (roll, ¥1,078) and JAN 4969133275968 (K-lab+, ¥880, usage notes) — 16 Oct 2026
• Matsukiyo Cocokara online, K-lab+ 韓国美容式アイテープ 夜用: price ¥880, ingredient list including rubber latex — 16 Oct 2026
• @cosme product page 296643 (161 reviews) and LIPS product page 253363 (4.03/5, 2 reviews; K-lab+ 3.89/5, 6 reviews) — 16 Oct 2026
• my-best 「夜用アイプチ」 ranking (31 products, updated 4 Aug 2026; roll #5 at ¥757, K-lab+ #9 at ¥808); rank-king night-tape sub-ranking (updated 1 Apr 2025; roll #2 at ¥861, K-lab+ #3 at ¥898); futae-naru.net for the roll's approximate on-sale date
• Optifold: product page (prices, 16 Oct 2026); Google Patents JP6114471B2 and KR101451199B1; U of T News, 7 Feb 2018, "U of T startups take home prizes at health challenge event"; Trustpilot opti-fold.com, 16 Oct 2026
• Surgery prices: American Society of Plastic Surgeons, eyelid surgery cost page (average surgeon fee, upper blepharoplasty); rank-king.jp article 26214 (updated 1 April 2025); isclinic.co.kr "쌍꺼풀 수술 비용" 2026 guide (modified 4 September 2026) — checked 16 Oct 2026

See also: Optifold vs. other eyelid tapes, glues and night products · Optifold vs. Night Eye Beauté · Optifold vs. Daiso eyelid tape · Can you sleep with eyelid tape on?

This article is general information, not medical advice. Optifold is a cosmetic product, not a medical device. Results from any eyelid routine vary from person to person. Cogit, コジット and K-lab+ are trademarks of their owner; they are used here only to identify the products being compared.