Chest Keloid Treatment With Eclar Plaster: Q&A From the United States

Last updated: September 22, 2026

The following Q&A features a woman from the United States who is currently undergoing chest keloid treatment with Eclar Plaster as of August 2026. She first started using the Eclar Plaster in October of 2025.

Chest Keloid Treatment With Eclar Plaster Questions and Answers

Answers may have been edited for brevity and clarity.

Question: What country are you from?

Answer: The United States.

Question: What caused your chest keloid to form?

Answer: An acne flare-up turned into a small keloid scar which grew.

Question: How old were you when the keloid began to form?

Answer: I was 25 years old.

Question: What’s your ethnic background?

Answer: I’m African American.

Question: What treatments did you try before trying Eclar Plaster?

Answer: Back in 2018, I got Kenalog steroid shots. I got 10 mg per mL. Then, in 2020, I got cryotherapy combined with the Kenalog steroid shots. They froze the keloid scar and then injected after freezing it. Then, in August 2025, I got a Kenalog shot combined with 5-FU but I had a bad reaction to it, which is why my before picture shows dark areas.

Question: How much did it cost you to buy the Eclar Plaster?

Answer: $118 after taxes and shipping. I purchased it from Bio-Japan.

Question: How much have the pain and itchiness decreased after wearing the Eclar Plaster for 3 months?

Answer: The pain subsided pretty quickly maybe the first couple of weeks. It took about 2 or so months for the itching to stop.

Question: The first before-and-after picture was taken after 3 months of wearing the Eclar Plaster. It can be harder to perceive the true change from a picture, so how much do you think it’s flattened after wearing it for 3 months?

Answer: I’d say the keloid became softer in the first 3 months with a slight decrease in size. I want to say I saw a bigger decrease about 4.5 months in.

Question: It’s now been 10 months of wearing the Eclar Plaster. What’s your updated assessment of how well it’s worked?

Answer: A few things: I sleep with zero issues. I used to be in so much pain at night because of where the keloid scar is located on my chest. As for appearance, it has decreased in thickness but not in length. It’s softer and less dark; it’s more of a pink shade now. It’s also flatter on the right side, the side that wasn’t that big to begin with. I change the plaster every 48 hours, meaning I apply a new patch every other day (taking it off every time I shower). I may start changing it every 24 hours to see if that’ll speed up the progress. My chest keloid was resistant to past modalities, so I knew the Eclar Plaster would take longer to work, so I’m being patient with the results.

I spoke to someone else who has a chest keloid in the same spot as me, and he said he wore them for over 2 years. I think it’ll be the same or a little longer for me. I also have a keloid on my leg (it’s young maybe 2 years old) and it’s almost gone. Like literally it looks like a tiny pimple now. I wore the Eclar Plaster for 10 months on the leg keloid and it worked beautifully! I can say the Eclar Plasters are phenomenal on young keloids! I wish I’d known about them when I was 25.

Comments from the editor are below:

The Japanese website where she bought Eclar Plaster is linked below:

Eclar Plaster Bio Japan Website

How Acne Can Lead to Keloid Scars

It’s no secret that one of the leading causes of chest, shoulder, back, and jawline keloids is acne. For keloid-prone individuals, monitoring your acne closely and keeping it moisturized is very important. Similar to this woman in the Q&A, I also had shoulder and chest acne as a teenager that caused me to form keloids. The key is to get the acne to come to a head so it can be drained. If your acne dries out and never comes to a head, it can turn into a keloid scar within a matter of days.

I wrote an entire article on how to prevent acne from forming into new keloid scars. The link is below, but here is the short version.

Can Acne Cause Keloids? A Prevention Guide

1. Dry skin and dry acne are major accelerators for those prone to keloid scarring.
2. If a pimple forms without a whitehead, keep it moisturized and soft so it does not harden and turn into a keloid scar.
3. Keeping the pimple moisturized and soft helps it form a whitehead or pus beneath the surface.
4. How do you keep the pimple moisturized? Apply lotion, let it absorb, and attach a silicone or hydrocolloid patch to cover it. You can use Hypafix tape to secure the silicone sheet or hydrocolloid patch.
5. After wearing the patch for a day or so, the pimple may soften and develop a visible whitehead or pus beneath the surface. Drain it and then keep it moisturized for the next few days to help the healing process.

Kenalog Steroid Injections for Keloids

If you have keloid scars on your chest, back, or shoulders, this is especially relevant to you. If you’re going to invest the time, money, and effort to see a dermatologist every four to five weeks for steroid injections, you have to be getting the right concentration of steroid injections. 

A common issue with keloid treatment is that dermatologists often inject the keloid scars with a steroid concentration that is too low to have an impact. Whether this is out of caution or simply a lack of experience treating keloids, I can’t say. But dermatologists will often start and continue with Kenalog at a concentration of 10 mg/mL if you don’t request a higher concentration. Keloid scars are not going to be flattened with a concentration of just 10 mg/mL.

She first started receiving Kenalog steroid injections in 2018 and received 10 mg/mL. Had a dermatologist used the appropriate concentration of Kenalog, her chest keloid scar could have flattened significantly if not entirely.

Based on my experience, if your keloid is located anywhere on your body other than your face, opt for undiluted Kenalog 40 mg/mL. No saline or lidocaine. This simply means asking your doctor not to mix the Kenalog with anything else. In other words, the Kenalog would be injected undiluted, directly from the vial into the keloid scar. 

A dermatologist may push back on the 40 mg/mL concentration and caution that atrophy or skin thinning is a possibility with Kenalog 40. Thank them for their caution, but insist on the 40 mg/mL. Not only is skin thinning unlikely, but even if it does occur, it still is a FAR better outcome for the patient than the keloid itself. Go back every four to five weeks for treatment until it’s flat. Apply lotion daily, and if you’re willing to go further, apply silicone sheets as well. 

For further information about using triamcinolone acetonide (steroid injections for keloids), you can check out this article:

Kenalog Steroid Injections for Keloid Scars

For information on how I personally treated my keloids, check out this article: 

Chest Keloid Treatment: What Actually Worked