What makes someone a poor candidate for injectables?

Pregnancy and breastfeeding come first, not because harm has been shown but because the products have not been studied in those groups and no responsible injector will be the first.

An active skin infection, a cold sore or a breakout at the site is a firm no until it clears, since a needle can carry bacteria or virus deeper.

A documented allergy to a filler ingredient, including the lidocaine many fillers contain, or to a toxin product, rules that product out.

For botulinum toxin, conditions that affect the junction between nerve and muscle, such as myasthenia gravis or Lambert-Eaton syndrome, and motor neurone disease, are listed contraindications because the drug acts on exactly that junction.

Certain antibiotics and muscle relaxants can amplify the effect and need to be discussed with the physician. And in California a person under eighteen cannot consent to cosmetic injectables on their own.

The gray areas

Blood thinners, aspirin, fish oil and some supplements raise bruising risk. That is a management question rather than an exclusion, but no one should stop a medicine a physician has ordered on an injector's say-so; the ordering physician decides. Autoimmune conditions vary.

Some physicians treat quietly controlled disease and defer during flares; others decline filler in people with certain conditions because of the risk of delayed nodules. A history of keloid scarring calls for caution with anything that breaks the skin.

Recent dental work, including a cleaning, is a reason many injectors delay filler for two weeks, because mouth bacteria can travel to fresh product.

Permanent or unknown filler already in the area is a special case.

Hyaluronic acid layered over silicone or an unnamed product from years ago carries a higher risk of lumps and inflammation, and a careful injector will want to know what is there, or will decline the area if no one can say.

The candidate who is not a poor patient but a poor fit

Some people are medically fine and still poor candidates. The commonest is the person whose concern is skin quality, sun damage or laxity, which toxin and filler do little for.

Another is the person who wants a look that would take more product than their face can carry without looking over-filled.

A third is the person who has had several treatments recently at different practices and is chasing a result no one has been able to name.

Before choosing a fix, the evidence to check is a photograph of the face at rest in flat daylight and an honest sentence about what the reader wants to see change.

If that sentence does not describe a line, a fold or a volume deficit, injectables may be the wrong tool.

Pressure is the last one. A partner who wants it, a friend who booked the same day, a promotion that ends Friday. Screening forms rarely ask about it, and good injectors do.

What to do next

Write down medicines, supplements, conditions, allergies and any product already in the face, with dates if possible, and take the list to the consultation. Expect the physician or injector to read it and ask follow-up questions rather than glance and move on.

If a practice does not ask about medical history at all, that is the answer to the candidacy question in itself. The point is the screening, not the name of the practice.

The desk sometimes describes screening by analogy to other forms with a purpose. The forms USCIS publishes ask the same questions of everyone because the answers change the outcome.

A city permit desk like Burbank's refuses a job until the paperwork supports it, without it being personal. And when a Los Angeles injector is disciplined for skipping the exam, it tends to reach the local news.

The archive at KTLA is where such stories surface, and a reader can search a practice name there in a minute.

How the desk checked this answer

The desk drew this list from the contraindications printed in the product information for the main toxin and filler brands, from the patient guidance of the American Society of Plastic Surgeons, and from the screening questionnaires Los Angeles practices ask patients to complete.

The lists agree closely. What differs between practices is how they handle the gray areas: autoimmune conditions, a history of cold sores, recent dental work, and the person whose expectations do not match what the product does.

The desk cannot assess any of that from a distance. In California a good-faith examination by a physician, or by a nurse practitioner or physician assistant working under one, is meant to happen before a first treatment, and that examination is where candidacy is decided.