TCA CROSS treatment is a powerful, evidence-based technique used to treat ice pick scars, deep boxcar scars, and enlarged pores by promoting collagen regeneration deep within the skin.

TCA CROSS involves applying a high-concentration trichloroacetic acid (TCA) directly into individual scars to trigger controlled injury and skin remodeling. Proper aftercare is essential for safe healing, minimizing complications, and optimizing your results.

What to Expect After TCA CROSS

It’s completely normal for the treated area to go through several phases of healing:

Immediately after treatment:

• Frosting or whitening of the scar area (this is expected)
• Mild redness and stinging for a few hours

Days 1–3:

• Scabs or crusts will form at the treatment sites
• Surrounding skin may be red, slightly swollen, or feel tight

Days 4–10:

• Scabs naturally begin to dry and fall off
• Skin beneath may appear pink or slightly indented—this is part of the remodeling process

Weeks 2–8:

• Skin tone gradually evens out
• Collagen remodeling continues for weeks, leading to gradual scar improvement

TCA CROSS Aftercare Instructions

DO:

• Gently cleanse the area twice daily with a mild, non-foaming cleanser
• Apply a healing ointment (e.g., Aquaphor, Vaseline, or a barrier repair cream) to keep the treated area moist until scabs fall off naturally
• Use cool compresses if you experience swelling or irritation
• Once scabs have fallen off, start applying a broad-spectrum SPF 30+ daily—sun protection is critical
• Let the skin heal naturally—be patient with the process

AVOID:

• Picking, scratching, or peeling off scabs—this can cause scarring or pigmentation
• Applying active ingredients (retinol, vitamin C, acids) until the area has fully healed
• Makeup on the treated area until the skin has re-epithelialized (usually after 5–7 days)
• Sun exposure for at least 2–4 weeks—UV exposure can worsen hyperpigmentation
• Excessive heat, sweating, or saunas in the first 48–72 hours

Common Side Effects (Normal)

• Mild stinging or tightness
• Redness or pinkness in the healing area
• Formation of scabs or crusts over each treated scar
• Slight temporary indentation or darkening of the scar before improvement begins

Rare Side Effects

Though uncommon, the following can occur:

• Prolonged redness or hyperpigmentation
• Hypopigmentation (light patches)
• Infection or pustules
• Persistent swelling or discomfort
• Textural changes

When to Contact SKINLAB

Please reach out immediately if you notice:

• Signs of infection (pus, foul odor, spreading redness, or fever)
• Blistering, severe pain, or unexpected skin reactions
• Scabs that remain after 2 weeks or worsen over time
• Pigmentation changes that don’t improve over several weeks
• Any reaction that feels unusual or concerning to you

Final Notes

TCA CROSS is a progressive treatment—results build over time. Most clients see noticeable improvement after 3–4 sessions spaced 4–6 weeks apart, with continued collagen remodeling over several months.

To support your skin’s transformation, we recommend:

• Avoiding sun exposure
• Following a barrier-focused skincare routine
• Staying consistent with your treatment plan