Question
What Is Usually Avoided the Week Before Injectables
Blood thinners, supplements, retinoids, tans and the two things never paused without the prescribing physician.
Most of what goes wrong in the week after a filler or neuromodulator appointment was set up in the week before it.
Bruising, swelling that lingers, a cold sore around a treated lip, a result judged under a tan: these are preparation problems, and they are common because the preparation list arrives as a text message the night before.
This page sets out what clinics in Los Angeles typically ask patients to pause, why each item is on the list, and which items are firm and which are habit. It sits in the aftercare and preparation topic.
The short answer
The short answer
For about a week: aspirin and ibuprofen taken for aches, fish oil, vitamin E, ginkgo, garlic and St. John's wort supplements, and heavy alcohol. For a few days: retinoids and strong exfoliants on the treatment area, waxing, and facials or peels.
On the day: intense exercise, and arriving with a tan or a fresh sunburn. Two things are never paused without the prescribing physician: blood thinners taken for a medical reason, and any other prescription medication.
About us
About these answers
The method behind this answer is plain: read the product labeling, the consent form and the professional guidance, then set out what they say in diagnostic order. Independent editors in Hancock Park did the reading.
The forward-planning habit the Department of Transportation urges before a long holiday drive is the habit these pages bring to an appointment. Nobody here holds a medical license; the licensed clinician treating a patient writes their preparation plan.
What decides the answer
Every injectable puts a needle or cannula through skin dozens of times, and each pass can nick a small vessel. Anything that slows clotting turns a nick into a bruise, and a bruise on the face lasts a week to ten days.
That is why the longest item on the list is the blood-thinning group: aspirin, ibuprofen and naproxen taken casually for a headache or a sore back, fish oil, high-dose vitamin E, ginkgo, ginseng, garlic supplements and St. John's wort.
Acetaminophen does not affect clotting and is the usual substitute for the week. Alcohol dilates vessels and thins the blood mildly, so the evening before is a poor time for it.
The second group protects the skin surface. Retinoids, glycolic and salicylic acids and physical scrubs leave the surface thinner and more reactive, which makes injection sites redder and slower to close. Most clinics ask for a three to five day pause on the treated area.
Waxing, threading and laser hair removal in the area fall under the same logic, as do peels and microneedling, which are usually spaced two weeks either side of an injectable appointment.
The third group is about the result rather than the risk. A tan changes how a clinician reads skin tone and swelling, and a sunburn is an inflamed surface nobody should inject through.
Hard exercise in the hours around treatment raises blood pressure and blood flow to the face, which increases bruising, and for neuromodulators it is discouraged for the rest of the day because of a theoretical concern about product spread.
Dental work is often separated from filler by a couple of weeks in either direction because of bacteria entering the bloodstream.
The fourth item is a history question rather than a pause.
Anyone who gets cold sores should say so before a lip or perioral treatment; the trauma of injection can trigger a flare, and the treating physician will often arrange antiviral cover starting a day or two before.
Recent vaccinations, an active skin infection, pregnancy and breastfeeding, and any autoimmune or bleeding disorder belong on the intake form, and a form that does not ask is a flag.
The public record on injectable products, including their labeling and adverse-event reporting, is searchable through federal dockets on Regulations.gov, and the labeling for each product carries its own list of conditions under which it is not to be used.
A clinic's preparation sheet should not contradict that labeling.
Expert note
Bruising after filler and neuromodulators is reported in a large minority of treatments in the published series, and the consent forms say so. The preparation list reduces the odds and the size of a bruise, and it does not remove them.
The blood-thinner pause is the one item with the broadest support, because platelet function takes about a week to recover after aspirin.
The supplement items rest on thinner evidence and long habit, which is why lists vary from clinic to clinic and why none of the variation is alarming.
The medication rule is firm in every guideline.
An anticoagulant or antiplatelet drug taken for a heart, stroke or clotting condition is never stopped for a cosmetic procedure without the physician who manages it, because the harm of a clot outweighs the harm of a bruise.
An injector who suggests otherwise has stepped outside their scope. The state's Good Faith Exam requirement exists partly to catch these histories.
A physician, nurse practitioner or physician assistant must assess a patient before a first injectable at a med spa, and the medication list is one of the things they are assessing.
Next steps
Ahead of the visit, the useful move is to ask for the preparation list in writing at booking rather than the night before, and to bring a list of every supplement and medication to the consultation.
A clinician who reads that list and asks a question about it is doing the job, in the same spirit as the Exploratorium exhibits that make a visitor test an idea rather than take it on faith.
Whether a physician, nurse practitioner or physician assistant will examine the patient before a first treatment, as California requires, is a fair question to put on the same call.
For anyone on a blood thinner for a medical reason, the conversation is between the injector and the physician who manages that medication.
Some patients are treated on it with extra care taken over bruising, and some are told to wait, but the choice is not made at the front desk.
Planning the week is easier with a calendar open: injectables sit best in a week without dental work, a peel, a flight the same day or a photographed event inside the following ten days.
About us
How these pages are written
Our editors are readers in Hancock Park with no medical license and no clinic affiliation, and the site sells nothing. Preparation lists vary between clinics, and the pages say where the variation comes from.
Any pause on a medication a physician manages is decided between that physician and the licensed clinician treating you, never at the front desk.
Before booking
Ask for the list in writing at booking
Bring every supplement and medication to the consultation and expect the clinician to read the list and ask about it. One practice where the examination question can be asked on the booking call is My Aesthetic Doctor.