TCA Acne Scar Treatment
● TCA Acne Scar Treatment
■ TCA Treatment for Acne Scars (TCA CROSS Method)
TCA (Trichloroacetic Acid) treatment is a type of regenerative therapy used to improve deep acne scars (pitted scars).
By applying a high-concentration acid precisely to the depressed areas of the skin, this treatment promotes skin regeneration and collagen production, gradually lifting and smoothing the surface.
It is particularly effective for ice-pick and box-type scars, which are often resistant to laser-only treatments.
By applying a high-concentration acid precisely to the depressed areas of the skin, this treatment promotes skin regeneration and collagen production, gradually lifting and smoothing the surface.
It is particularly effective for ice-pick and box-type scars, which are often resistant to laser-only treatments.
■Treatment Principle – The CROSS Method
The CROSS (Chemical Reconstruction of Skin Scars) technique uses a high-concentration solution of trichloroacetic acid (usually 50–100%) applied directly into each small depression using a fine stick or micro-applicator.
The acid causes a controlled protein reaction (frosting) in the targeted area, leading to the formation of a light scab.
During the following days, natural healing triggers new collagen remodeling in the dermis, and the depth of the scar gradually improves.
The acid causes a controlled protein reaction (frosting) in the targeted area, leading to the formation of a light scab.
During the following days, natural healing triggers new collagen remodeling in the dermis, and the depth of the scar gradually improves.
● Treatment Steps
Cleansing & Examination – The doctor checks the scar type and skin condition.
Anesthesia (if needed) – A topical numbing cream may be applied for sensitive areas.
TCA Application – A precise amount of acid is applied only to the depressions.
Inflammation & Regeneration Phase – Frosting and scab formation occur over several days.
The scab naturally falls off within 1–2 weeks.
Healing Stage – Temporary redness or pigmentation may appear but fades gradually over time.
Anesthesia (if needed) – A topical numbing cream may be applied for sensitive areas.
TCA Application – A precise amount of acid is applied only to the depressions.
Inflammation & Regeneration Phase – Frosting and scab formation occur over several days.
The scab naturally falls off within 1–2 weeks.
Healing Stage – Temporary redness or pigmentation may appear but fades gradually over time.
● Treatment Interval and Frequency
This treatment does not produce dramatic change in a single session; multiple applications are recommended.
Sessions are typically performed every 4–6 weeks, with 3–6 sessions as a general guideline.
Skin texture becomes smoother and more even as treatments progress.
Sessions are typically performed every 4–6 weeks, with 3–6 sessions as a general guideline.
Skin texture becomes smoother and more even as treatments progress.
● Downtime
• Frosting and small scabs last about 3–7 days.
• Redness may persist for 1–3 weeks.
• Temporary pigmentation may appear, especially in fair or sensitive skin, but will fade naturally.
• Light washing and makeup are allowed from the next day, following the doctor’s instructions.
• Redness may persist for 1–3 weeks.
• Temporary pigmentation may appear, especially in fair or sensitive skin, but will fade naturally.
• Light washing and makeup are allowed from the next day, following the doctor’s instructions.
● Combination Treatments
The TCA CROSS method can be combined with other procedures to enhance results:
• CO₂ Fractional Laser
• Skin Booster Injections (Rejuran, Juvelook, etc.)
• Subcision (Scar Tissue Release)
Your doctor will recommend the most effective combination based on your skin type and scar depth.
• CO₂ Fractional Laser
• Skin Booster Injections (Rejuran, Juvelook, etc.)
• Subcision (Scar Tissue Release)
Your doctor will recommend the most effective combination based on your skin type and scar depth.
● Precautions
• Avoid sun exposure after treatment to prevent pigmentation.
• Do not pick or remove scabs prematurely.
• Treatment is not performed during pregnancy, breastfeeding, or active inflammatory acne.
• Do not pick or remove scabs prematurely.
• Treatment is not performed during pregnancy, breastfeeding, or active inflammatory acne.
● Common Questions
Q. Does it hurt?
A. You may feel a brief stinging sensation, but it subsides quickly. A numbing cream can be used if needed.
Q. When will I see results?
A. Some improvement may be visible after one session, but noticeable smoothing usually requires three or more treatments.
Q. Will it cause pigmentation?
A. Temporary pigmentation may occur but fades over time. Whitening creams or tranexamic acid can be used to speed recovery.
A. You may feel a brief stinging sensation, but it subsides quickly. A numbing cream can be used if needed.
Q. When will I see results?
A. Some improvement may be visible after one session, but noticeable smoothing usually requires three or more treatments.
Q. Will it cause pigmentation?
A. Temporary pigmentation may occur but fades over time. Whitening creams or tranexamic acid can be used to speed recovery.