When should I call the clinic after treatment?

When should I call the clinic after treatment? The question belongs to the first hours and days after a visit, while the recovery window is still open. This page marks the line between waiting and calling.
The line www.fda.gov draws
For injectable fillers, www.fda.gov is specific about the signs that should not wait: "Seek immediate medical attention if you experience unusual pain, vision changes, a white, gray, or blue appearance of skin near the injection site"
Those are three signs: pain that is unusual for you, any change in vision, and skin near the injection site that looks white, gray or blue. Do not wait for the next appointment on any of them, and do not wait to see whether they settle.
Ordinary aftercare questions
Not every question is that urgent, but the sharp advice still holds: when you cannot tell, call. Two guides help while you wait for a reply: the Cleveland Clinic overview of microneedling and its guide to chemical peels: types, conditions treated and what to expect. The sun protection guidance and the cosmetic treatments overview are worth a read before your next session.
Keeping the clinic's number close during recovery
Recovery is a stage, not a single day. Plan your follow-up around it, and keep the clinic's phone number where you can find it.
When monitoring turns into calling now
Any of the three FDA signs above changes the plan from "monitor" to "call now."