Many people have heard of E.P.T.Q filler but are unsure what S100, S300 and S500 mean. This article explains how the models differ and where they may be used, so you can discuss them with your doctor with greater understanding.
What is E.P.T.Q filler?
E.P.T.Q (pronounced e-pi-teek) is a hyaluronic acid (HA) filler made by Jetema, a South Korean aesthetics company. All three models use a cohesive HA gel at a concentration of 24 mg/mL, made with physical and chemical molecular crosslinking.
Like other HA fillers, E.P.T.Q gradually breaks down in the body over time. If the result is not as desired, a doctor can use an enzyme to dissolve it. Versions containing lidocaine are also available to reduce discomfort during injection.
Why are the three models different?
Not different formulas, but the same gel adjusted to different firmness levels.
What distinguishes E.P.T.Q from many brands is that all three models have the same particle size and differ only in their degree of molecular crosslinking: S100 is the least firm and S500 the firmest.
The number indicates gel firmness: a higher number means firmer gel that holds its shape better; a lower number means softer gel that spreads more easily.
Where are S100, S300 and S500 suitable?
Each model is designed for a different skin layer, from superficial skin to the deep layer beneath it.
| Model | Details |
|---|---|
S100![]() | Soft texture for superficial skin Firmness level 1 of 3 Soft, easily spread gel blends with the skin, suitable for fine detail such as superficial wrinkles, small lines and thin-skinned areas. |
S300![]() | Medium texture for the middle skin layer Firmness level 2 of 3 Between S100 and S500, it can be used for both detail and shaping. It is commonly used to fill deep folds such as nasolabial folds and add facial dimension. |
S500![]() | Firm texture for deep layers Firmness level 3 of 3 The firmest gel in the range holds its shape well and is suitable for structural support and shaping, such as restoring volume in sunken areas and defining facial contours. |
This is only a general guide. In practice a doctor may combine models according to each person's skin and facial structure.
What should you know before E.P.T.Q filler?
The right model for the right layer matters more than injecting more
Firm gel placed superficially may appear raised, while soft gel may not support areas needing structure. A doctor should assess you before selecting a model.
Check the product
Ask to see the box and seal before injection, check the Thai label and Thai FDA registration number, and ask for the box to be opened in front of you.
Injections only by a doctor
Filler is a medical procedure. The injector should be a doctor who understands facial anatomy.
Share your complete history
Tell your doctor about medical conditions, medicines, supplements, allergies and any fillers or substances previously injected.
A doctor who thinks before injecting
At Dr.Namwan Clinic, we don't start by asking how many cc to inject; we start by asking what this face needs. The doctor assesses facial structure before choosing the model and amount, and explains each step: sincere, attentive and targeted.
This article provides general information. Results depend on individual skin and concerns. Always consult a doctor before treatment.
The information in this article is general knowledge. Results depend on each individual's skin and concerns. Always consult a doctor before any treatment.
Frequently asked questions
How do S100, S300 and S500 differ?
All three have the same HA concentration but different gel firmness. S100 is softest for superficial skin, S500 is firmest for deep structural support, and S300 is in between.
Can several models be used in one session?
In some cases, a doctor may choose different models for different areas based on your facial assessment and goals.
How long does E.P.T.Q filler last?
It depends on the model, injection site, amount and individual metabolism. Ask the evaluating doctor about your expected duration.
Does injection hurt?
Some models contain lidocaine, and the doctor may apply topical anaesthetic before injection. Sensations vary. Mild swelling or bruising may occur and fade on its own.
Can it be dissolved if I am unhappy with the result?
HA filler can be dissolved with hyaluronidase. The doctor will assess whether dissolution or another correction is appropriate.
Interested in Filler?
Enquiries and appointments at both our Chiang Mai and Khon Kaen branches






