Short answer: the numbers in the TKTX name (38, 40, 75, 99.9) are the manufacturer's series marking, not a lidocaine percentage. A cream marked 75 doesn't contain 75% lidocaine, that concentration doesn't exist in a cosmetic product. The packaging colour (gold, black, blue, red) also marks the series, not the formula. Let's look at what's actually known about TKTX, how the colours differ, and how to choose one for your task.

Key point: TKTX doesn't publicly disclose the composition of its creams. So the honest reference point for a professional isn't the number on the box, it's the type of product (cream or gel), the format and the hold time. Most everything else about TKTX online is guesswork.
TKTX infographic: numbers 40, 75, 99.9 and packaging colour as series marking, not lidocaine percentage or the actual cream and gel formula
The numbers and colour on TKTX packaging mark the series, not the lidocaine concentration inside.

What the numbers TKTX 40, 75 and 99.9 mean

This is the most common question about the brand, and it's also where most of the confusion comes from. The numbers in the TKTX name are an internal series-strength marking: 75 is positioned by the manufacturer as a stronger line than 40. But these numbers are not the percentage of active ingredient.

Here's why that can be said with confidence: lidocaine at a concentration of 40% or 75% isn't used in products for external application. Professional cosmetics in this category work with combined formulas, where several active ingredients add up to single-digit percentages, not tens of percent. We covered how to read percentages in anesthetic names in general in a separate article: what 10%, 12.5% and 40% mean in anesthetics.

Important: if a seller writes "TKTX with 75% lidocaine," that's either a mistake or marketing. Don't use that number to choose a product.

How TKTX colours differ: gold, black, blue, red

The packaging colour on TKTX marks the series, not a separate formula. The manufacturer doesn't publish separate formulas for each colour, so it's more accurate to talk about lines rather than a "gold formula" or a "black formula." The variants usually in stock:

Variant Series marking Form
TKTX Gold 38 and 40 cream, 10 g
TKTX Black 40 and 75 cream, 10 g
TKTX Blue 40 and 75 cream, 10 g
TKTX Red 40 cream, 10 g
TKTX Gold, Black and Red cream packs plus TKTX Blue gel, marked 40% and 75%, laid out on a light table
On TKTX packaging, the colour and number mark the brand's series, not the lidocaine percentage.

The most searched-for variant is TKTX Gold, but in practice professionals choose between the 40 and 75 series, not between colours. Always check exact stock and packaging on the product page.

Cream, gel or TKTX spray: what's the difference

The brand comes in three forms, and this is the difference that actually affects your work.

  • Cream (10 g). Primary product: applied to clean, dry skin before the procedure, in a thick layer under film.
  • Gel (15 ml). The only item in the line with a composition confirmed by documentation: lidocaine 6% + tetracaine 3% + epinephrine 0.2%, totaling 9.2%. The epinephrine in the formula constricts blood vessels, which is why the gel is more often used during the procedure.
  • Spray (30 ml). Convenient for quick application to an area. The manufacturer hasn't disclosed the composition, and percentages found online for it aren't confirmed.
Reference point: if you need a predictable composition, TKTX gel is the only item in the line with a documented formula. For the rest, go by form and hold time, not the numbers.

How to apply TKTX and how long it lasts

Per the manufacturer's instructions, TKTX cream is held under film for 25 minutes to an hour, depending on skin sensitivity, and the film itself is recommended to stay on for 50 or 60 minutes. The stated duration of effect for the 40 series is 1.5 to 3 hours, depending on skin type. The thickness of the top layer is specified exactly: 3–6 mm, and it isn't rubbed in.

The application order is nearly the same across most primary creams, and mistakes in it are the main reason a product "doesn't work." For a detailed step-by-step breakdown: how to apply anesthetic, film and hold time.

What's known about composition and safety

Let's be honest here: there is no single published composition for TKTX creams. Different sellers list different formulas, and registration data differs from country to country. Only the gel's composition is confirmed by documentation.

What this means in practice: TKTX is a professional cosmetic for external use, not a medicinal drug. Before first use on a client, do a sensitivity test, don't exceed the time and dose specified in the instructions for that specific package, and use the product for its intended purpose. If composition transparency matters to you, choose lines where the manufacturer publishes the formula, those exist in the catalog, and we covered them in our breakdown of primary and secondary products.

Which TKTX to choose for your task

  • Tattoos and long sessions. Cream under film in advance, series based on your experience working with the client's sensitivity.
  • Work during the procedure. Gel with epinephrine, its composition is confirmed.
  • Quick application to an area. Spray.
  • Choosing for a specific procedure (permanent makeup, lips, mesotherapy, hair removal) is covered separately: which anesthetic for which procedure.

If you're choosing a product for the first time, start with the general guide: how to choose an anesthetic for tattoos, permanent makeup and brows.

TKTX and other anesthetics in stock

The It's Beauty catalog has primary and secondary products, gels and hemostatics. Each one lists composition, method of application and time, whenever the manufacturer discloses them.

Go to the anesthetics catalog

Frequently asked questions

How much lidocaine is in TKTX 75?
The number 75 is the manufacturer's series marking, not the lidocaine content. The manufacturer doesn't publicly disclose the exact composition of TKTX creams. Lidocaine at a concentration of 75% doesn't exist in products for external application.
What's the difference between TKTX gold and black?
The colour marks the line's series, not a separate formula. The manufacturer doesn't publish separate confirmed compositions for each colour. The practical difference for a professional is the product's form and hold time, not the packaging colour.
How long should TKTX stay under film?
Per the manufacturer's instructions, from 25 minutes to an hour depending on skin sensitivity, the film itself is recommended to stay on for 50 or 60 minutes. Check the exact time on the specific product page.
How long does TKTX last?
For the 40 series, the manufacturer states 1.5 to 3 hours depending on skin type. For other items the time is on the packaging.
Which TKTX has a known composition?
Only the 15 ml gel: lidocaine 6%, tetracaine 3% and epinephrine 0.2%, totaling 9.2%. There's no single published composition for the creams or the spray.
Is TKTX a medicine?
No. It's a professional cosmetic for external use. Before first use, do a sensitivity test and follow the instructions for the specific package.
  • Hold time, layer thickness and duration are given per the manufacturer's instructions for the TKTX 40 series. Values may differ for other items, check exact data on the product page.
  • The composition of TKTX gel is given per the supplier's documentation. For the creams and spray, the manufacturer doesn't publish a single composition, so percentages for them aren't given in this article.
  • This material is for informational purposes and does not replace a specialist consultation. All products are for professional external use.