If you have 2 too close only tca cross 1 of them.then let heal then next time cross the other.

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@Quadboy isabsolutely correct. +1 on that. Remember TCA CROSS requires several treatment, so in theory you are only 6 weeks behind on that ONE particular scar. Stay safe .

Then treat the 5 that are not close to each other....do not treat all as if you have scar contracture from the TCA, that would pull your scars down, or possibly cause a mat of hypo pigmentation. Just be patient and treat 4-5, separated by 5-6 week treatment gap. If you are going to DIY use a toothpick and be super accurate in your placement of TCA. Just be safe. May the Force be with you.