Which lubricant works with this chip? | Material and hygiene matter [OK Prostate Chip]

This page is based on entries from "ok-lab's diary" (https://ok-lab.hatenablog.com/), the Japanese development diary
written by Mr. Okada, founder of OK Lab (Okada Comfortable Life Laboratory). Only the entries about "choosing a lubricant"
are summarized here, in order of publication. Past prices and sizes are as written at the time. Current prices come from
the official product list (retrieved September 4, 2026). Quotations are translated from Japanese.

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Note: This page is a personal reading log by someone with no connection to the maker or the seller. It reflects the source entries as of their publication dates and makes no guarantee of accuracy or safety. The product is not a medical device; talk to a doctor about any health decision. Check the official site for current information. This page contains advertising.

In short

Lubrication helped some users, but others still reported resistance, slipping, pain, or bleeding.

Mr. Okada's advice considered dryness, contamination, and material compatibility, without establishing one best lubricant.

OK Lab, a small company in Japan, currently lists related devices but no dedicated lubricant.

If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.

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About this product

The OK Prostate Chip is a small device that is placed in the urethra (the urine passage) so that it acts on the prostate; the maker sells it in several shapes, sizes and materials. It is made and sold by OK Lab (Okada Comfortable Life Laboratory), a small company in Japan, through its own online store, and prices are in Japanese yen (JPY). The maker's development diary, "ok-lab's diary", is written in Japanese. This page is an English summary of it, and every quotation is translated. OK Lab ships internationally, so readers outside Japan can order (see "Buying from outside Japan" below). Product names on this page are plain-English descriptions. The official Japanese product name is shown once in the product table so you can find the same item in the store.

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Before you read: key terms

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What happens: choosing a lubricant

The OK Prostate Chip is a small device placed in the urethra so that it acts on the prostate. These entries discuss lubricant as a liquid or jelly intended to reduce resistance where the chip or its tubing contacts the urine passage. They describe lubrication on the device and within that passage, with different experiences involving resin, glass, ceramic, and silicone tubing. The accounts include easier passage, slipping, pain, and concerns about contamination.

Chip lubricant addressed dryness in the maker's early resin advice

In an entry published in October 2017, Mr. Okada said urethral dryness varied with a person's condition. His comments followed a beginner staff member's account of difficulty with the device.

For glass chips, he believed residual water could substitute for lotion, based on his own experience. His advice for resin chips was different: he considered lubricant safer when the urine passage was dry.

(Source: ok-lab's diary, published October 2017)
https://ok-lab.hatenablog.com/entry/20171019/1508375473

The maker believed chip lubricant could diminish before reaching deeper bends

In an entry published in January 2018, Mr. Okada wrote that lubricant could largely disappear from the tip during passage. He connected this loss with difficulty at the bend near the urinary sphincter (a muscle that closes the urine passage).

His proposed solution centered on replenishing lubrication that had been lost. He also urged beginners to allow time, rather than expecting to reach the prostate immediately.

(Source: ok-lab's diary, published January 2018)
https://ok-lab.hatenablog.com/entry/20180127/1517054930

A stopper prototype exposed limits of relying on chip lubricant

In an entry published in June 2018, a tester described pain and bleeding with a stopper chip (an additional part limiting inward movement). The tester linked injury to insufficient lubrication; a later attempt with more lubricant succeeded, although entry remained difficult. Mr. Okada acknowledged that the prototype's construction might have contributed.

No matching product can be confirmed on the current list. His response focused on improving the stopper's finish and making it gentler before formal sale.

(Source: ok-lab's diary, published June 2018)
https://ok-lab.hatenablog.com/entry/20180609/1528523953

More chip lubricant eased entry but made one custom pair slip

In an entry published in April 2019, a customer described difficulty with an oversized custom double chip. Their follow-up credited lubricant with successful passage, but said the device then slipped out of the sphincter more easily.

The diary does not record a remedy for that slipping. No matching product can be confirmed on the current list. Mr. Okada's earlier reply had proposed more lubricant for the entry difficulty.

(Source: ok-lab's diary, published April 2019)
https://ok-lab.hatenablog.com/entry/2019/04/13/150233

The maker linked bleeding to force when discussing chip lubricant

In an entry published in January 2020, a customer reported pinkish bleeding after using a chip. The customer regarded it as minor and planned another attempt.

Mr. Okada blamed force during entry or withdrawal; this was his interpretation of the report. The diary does not record a medical assessment or subsequent recovery. For difficult entry, his reply favored greater lubrication.

(Source: ok-lab's diary, published January 2020)
https://ok-lab.hatenablog.com/entry/2020/01/18/132849

Silicone tube lubricant failed to prevent severe resistance and pain

In an entry published in August 2022, a customer reported strong resistance despite plenty of Ryub Jelly, a lubricating gel. Their assembly included silicone tubing, and severe burning during urination followed the attempt. Staff could not identify the cause; a later cleaning experiment did not resolve the reported surface resistance.

The customer said the burning had largely settled by the following day. No matching product can be confirmed on the current list. Mr. Okada suspected sticky lubricant might suit silicone poorly, but said he lacked the knowledge to advise on a replacement.

(Source: ok-lab's diary, published August 2022)
https://ok-lab.hatenablog.com/entry/2022/08/20/122920

A customer's changed chip lubricant approach coincided with pain-free urination

In an entry published in January 2025, a semi-long resin chip customer asked whether painful urination would improve with experience. A follow-up credited lubricant delivered by syringe (a tool for delivering liquid) with smoother passage and pain-free urination, without identifying the chip used then.

Staff had been unable to explain the initial pain. Their advice had been a pause in use because they considered irritation a possible explanation.

(Source: ok-lab's diary, published January 2025)
https://ok-lab.hatenablog.com/entry/2025/01/11/122910

Purchased lubricating jelly enabled repeated tests, although the maker preferred thinner liquid

In an entry published in April 2026, Mr. Okada reported buying jelly during development testing. He said it allowed repeated tests and described finding it useful.

The paragraph does not identify the purchased jelly by name. For silicone tubing, he still favored something less thick or sticky.

(Source: ok-lab's diary, published April 2026)
https://ok-lab.hatenablog.com/entry/2026/04/11/122913

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The maker's answer to choosing a lubricant

The maker's answers distinguished lubricant hygiene from how differently chip materials and silicone tubing behaved.

Stored chip lubricant raised contamination concerns beyond slipperiness alone

In an entry published in November 2018, Mr. Okada warned about contamination during both lubricant storage and application. He was concerned that fingers could contaminate the lubricant or chip.

He proposed lubricant already inside a condom, saying it eased passage and avoided direct finger contact with the chip. His recommendation rested on those handling concerns and the condom's sealed packaging.

(Source: ok-lab's diary, published November 2018)
https://ok-lab.hatenablog.com/entry/20181103/1541231588

The maker's condom lubricant warning specifically concerned oil and rubber

In another entry published in November 2018, Mr. Okada discussed lubricant for condom-covered anal equipment. He acknowledged using petroleum jelly himself despite describing that choice as contrary to condom instructions.

He warned that oily lubricants could damage rubber. Citing the condom instructions, he pointed to lubricants sold by condom manufacturers as the more reassuring choice.

(Source: ok-lab's diary, published November 2018)
https://ok-lab.hatenablog.com/entry/20181110/1541826499

Later instructions favored disposable chip lubricant or containers avoiding finger contact

In an entry published in July 2021, the proposed instruction sheet addressed lubricant-related infection concerns. It explicitly recognized that lubricant itself could be a source of infection.

The sheet also mentioned lubrication for people experiencing dryness. Its stated preference was for disposable lubricant or a type that avoided contact with fingers.

(Source: ok-lab's diary, published July 2021)
https://ok-lab.hatenablog.com/entry/2021/07/24/125923

For silicone tube lubricant, the maker favored liquid with little stickiness

In an entry published in November 2023, Mr. Okada described silicone's friction as unusual. He discussed this in response to concerns about silicone tubes used with the devices.

He said he personally relied on tap water and wondered whether hospital lubricants might work better. His advice for tubing favored liquid that was not particularly sticky.

(Source: ok-lab's diary, published November 2023)
https://ok-lab.hatenablog.com/entry/2023/11/11/122638

If you see blood in your urine, even a small amount or for the first time, do not wait and see. See a urologist right away. If you suddenly cannot urinate, or the device cannot be removed, do not try to fix it yourself. Go to a medical facility, including emergency care, immediately.

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How choosing a lubricant changed over time

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OK Prostate Chip products related to choosing a lubricant

The current list includes resin chips discussed in lubrication reports, including a report of painful urination.

Products that appear in these entries

The resin chip with a long narrow section is listed in OK Lab's own online store.

The semi-long resin chip is listed in OK Lab's own online store.

(Source: ok-lab's diary, published January 2022)
https://ok-lab.hatenablog.com/entry/2022/01/15/124252

(Source: ok-lab's diary, published January 2025)
https://ok-lab.hatenablog.com/entry/2025/01/11/122910

Products the diary mentioned as alternatives

The diary names no alternative.

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Common worries about choosing a lubricant

The diary leaves brand compatibility unresolved and records different answers for material friction, difficult passage, and persistent pain.

"Does chip lubricant matter more than glass or ceramic?"

In an entry published in May 2020, a resin-chip customer asked which material would cause less rubbing after reporting discomfort and bleeding. Mr. Okada described glass and ceramic as smoother than resin, with little difference between the two.

The customer later reported satisfaction, while acknowledging continued discomfort at the next attempt. The diary does not record a switch to glass or ceramic. Mr. Okada emphasized lubrication and declined to recommend one next model.

(Source: ok-lab's diary, published May 2020)
https://ok-lab.hatenablog.com/entry/2020/05/23/132040

"Are KY jelly, Pro Jelly, and lubricating oils compatible?"

In an entry published in May 2023, a customer asked whether those products suited the chip's resin and thread. Mr. Okada said the company did not use jelly and could not provide compatibility information.

He also said he had received no reports specifically blaming a jelly. His reply offered no brand recommendation or confirmation that the named products were compatible.

(Source: ok-lab's diary, published May 2023)
https://ok-lab.hatenablog.com/entry/2023/05/27/122912

"Could chip lubricant help when the curved model won't pass?"

In an entry published in June 2024, a customer reported difficulty with a chip whose tip curved differently from ordinary models. No matching product can be confirmed on the current list. Mr. Okada suspected insufficient moisture, but also discussed the shape and the wire's tendency to bend.

He suggested Oronine ointment as a possibility when thin lotion did not remain near the sphincter. His support came from older writing about sexual use and his own past experience. He invited correction if the suggestion was mistaken.

(Source: ok-lab's diary, published June 2024)
https://ok-lab.hatenablog.com/entry/2024/06/29/123044

"Can lubricant prevent painful urination after first use?"

In an entry published in July 2026, a customer asked about painful urination lasting approximately 2–3 days after first use. They wanted to know whether technique or familiarity explained it.

Mr. Okada discussed possible injury or inflammation, but said he lacked knowledge to give specific lubricant advice. The diary does not record the customer's later symptoms. His advice was to stop use during pain and consider urology care for repeated episodes lasting days.

(Source: ok-lab's diary, published July 2026)
https://ok-lab.hatenablog.com/entry/2026/07/25/123012

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Buying from outside Japan

OK Lab ships internationally to countries covered by Japan Post's EMS courier service. Overseas orders are paid in advance by PayPal. Each order carries a ¥400 (about $3 at ¥156 = $1, rate as of 2026-09-04) handling fee, and EMS shipping is charged on top. These terms come from OK Lab's official sales-terms page (written here as plain text, not a link: ok-lab.net/docs/law), checked on September 7, 2026; confirm them on the official store before you order, because they can change.

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Summary of this article

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Source: ok-lab's diary (Okada Comfortable Life Laboratory). The original entries are in Japanese; quotations on this page are translated. Photos and videos are on the original entries. Unused facts: F31 (procedural handling instructions omitted under Rule 23).