Short answer: apply numbing cream to clean, dry skin in a thick layer and always cover it with film, hold it for 10 to 60 minutes depending on the product, then wipe off the residue and start work. Secondary gel goes on later, during the procedure, straight onto broken skin. Below we walk through the steps, real hold times by product, and the mistakes that stop numbing cream from working.

Key point: without film, primary cream works noticeably weaker, and secondary gel does not work at all on intact skin. Sustaine's instructions say it plainly: the product is ineffective when applied to intact skin.

How to apply numbing cream

The order of applying numbing cream is nearly the same across most primary products, only the hold time and layer thickness differ. The general scheme, per manufacturer instructions:

  1. Clean and dry the skin. A-CAINE and B-CAINE call for thoroughly washing and drying the area, Depain also specifies disinfecting it.
  2. Apply the first layer and rub it in until absorbed. This is how A-CAINE, B-CAINE, PM Cream and F&E are used.
  3. Apply a thick layer on top and don't rub it in. TKTX specifies an exact thickness: 3–6 mm.
  4. Cover with film. Depain is strict about this: seal tightly with an occlusive polyethylene dressing. F&E advises leaving the film on until you feel numbness.
  5. Hold for the time specified for that particular product (see the table below).
  6. Remove the film and wipe off the residue with a dry wipe, let the skin air dry.
  7. Start the procedure.
Infographic with 6 steps for applying numbing cream: cleaning the skin, thin and thick layers, film occlusion, wait time and wiping off residue before the procedure
The step-by-step order for applying numbing cream, from cleaning the skin to starting the work.

Why anesthetic is covered with film

Film (occlusion) isn't a formality, it's part of how the numbing actually works. It keeps the product and heat against the skin, stops the formula from drying out and helps it penetrate deeper. That's why manufacturers spell out occlusion in their instructions: Depain calls for a tight occlusive dressing, and TKTX states outright that for the best result the treated area should be covered with film for 50 minutes to an hour. Without film, the cream partially evaporates and rubs off, and the effect comes out weaker and shorter.

A master in black gloves applies numbing cream with a spatula onto a client's forearm, with a roll of film and a timer nearby
The cream goes on in a thick layer, next comes the film and a timed wait, the exact hold time always depends on the product label, anywhere from 10 to 60 minutes.

How long to leave numbing cream under film, and how long it lasts

How long to leave numbing cream on depends on the product, there's no single time that fits all. Here are real numbers from official manufacturer instructions, including TKTX, A-CAINE and B-CAINE:

Product Hold under film How long it lasts
PM Cream 10–15 minutes on label
F&E Tattooist Red 7% 15–20 minutes on label
TKTX 40 25–60 minutes (film 50–60) 1.5–3 hours
Depain 30–60 minutes on label
A-CAINE 10.95% under film 40–50 minutes
B-CAINE 11.5% under film 90–120 minutes

The rule of thumb is simple: the more sensitive the client, the closer you go to the upper end of the range. TKTX puts it plainly: 25 minutes to an hour depending on skin sensitivity. There's no point holding it longer than instructed, always check the exact time on the product page.

How to apply secondary gel anesthetic

Secondary gel anesthetic is a different tool with different rules. It goes on during the work, on broken skin, not ahead of time.

  • Only on broken skin. Sustaine states directly: apply moderately to damaged skin, on intact skin the product is ineffective.
  • Moderate amount, don't flood the area. The gel works fast: with Sustaine the effect kicks in in about 30 seconds.
  • Wipe off excess before continuing work, otherwise the gel gets in the way of the pigment.
  • Don't exceed the frequency. Emmeline Super Numb: do not use on the same area more than 3–5 times a day.
A master in black gloves works a tattoo machine over skin with a blue stencil, gel anesthetic applied to open skin during the session
Secondary gel anesthetic goes on open skin right during the procedure, not beforehand.

Anesthetic for the eyelids and eye area

The technique here is separate. Eye Anesthetic Cream's instructions call for cleaning the eyelid with a disinfectant made for mucous membranes, placing a piece of cotton pad under the eyelid and keeping the anesthetic from contacting the eye. Regular creams aren't suitable for this area.

Why numbing cream doesn't work

If there's no numbing, or it's weak, it's almost always about application, not the product. Check against this list:

  • Worked without film. Primary numbing cream without occlusion partially evaporates and rubs off, so the effect comes out weaker and shorter.
  • The layer was too thin. The top layer should go on thick and not be rubbed in: TKTX specifies 3–6 mm.
  • Removed it too early. Every product needs its own hold time, from 10–15 minutes for PM Cream to an hour for TKTX.
  • Applied secondary gel to intact skin. It doesn't work that way: Sustaine states directly that the product is ineffective on intact skin.
  • The skin was damp or oily. Instructions require washing and drying the area before application.
  • Didn't wipe off the residue before starting, so it gets in the way of the pigment.
Important: don't increase the dose or time beyond the instructions to try to "push" the effect. If the anesthetic didn't work with correct technique, choose a product with a different formula or a longer duration.

Sensitivity test and contraindications

  • Sensitivity test before first use. Sustaine, Emmeline and TKTX Gel all require this.
  • For professional external use only. TKTX Gel specifically states: for licensed professionals only.
  • Pregnancy and breastfeeding are listed as contraindications for several products (Emmeline, PRO-CAINE).
  • Don't exceed the frequency or time specified for that particular product.

If you're still choosing a product, check our other breakdowns: the full guide to choosing an anesthetic, what the percentages mean, primary or secondary and which anesthetic for which procedure.

Work by the product's instructions, not by guesswork

In the It's Beauty catalog, every anesthetic lists its formula, method of application and time. Primary, secondary, hemostatics, more than 40 items in stock.

Go to the anesthetics catalog

Frequently asked questions

Do you have to cover numbing cream with film?
For primary cream, yes. Film keeps the product and heat in place and helps the formula penetrate deeper, which is why manufacturers specify occlusion in their instructions. Without film the effect is weaker and shorter.
How long should numbing cream stay under film?
It depends on the product: PM Cream 10–15 minutes, F&E Tattooist Red 15–20 minutes, TKTX 40 from 25 minutes to an hour, Depain 30–60 minutes. The more sensitive the client, the closer to the upper end. Check the exact time on the product page.
What layer should numbing cream be applied in?
First a thin layer is rubbed in until absorbed, then a thick layer goes on top and isn't rubbed in. TKTX specifies the exact thickness of the top layer: 3–6 mm.
Why doesn't numbing cream work?
Most often it's about application: working without film, applying a thin layer instead of thick, removing it too early, or applying secondary gel to intact skin. Check your technique against the product's instructions.
Why didn't secondary gel work?
Most likely it was applied to intact skin. Secondary gels are made for broken skin during the work: Sustaine's instructions state directly that the product is ineffective on intact skin.
How long does the numbing last?
Per the instructions: A-CAINE 40–50 minutes, B-CAINE 90–120 minutes, TKTX 40 from 1.5 to 3 hours depending on skin type. For other products the time is on the label.
Is a sensitivity test necessary?
Yes. Sustaine, Emmeline and TKTX Gel require a test before first use. It takes a minute and removes the risk of a reaction in the client.
  • Hold times, layer thickness and duration are given per official manufacturer instructions and labels from the catalog. Each product has its own values, check exact data on the product page.
  • This material is for informational purposes and does not replace a specialist consultation. All products are for professional external use.