Short version: in Colorado, a med spa and a dermatology practice inject under the same legal framework. Rule 800 makes injecting the practice of medicine, it has to be delegated by a physician, and every med spa offering it needs a medical director. So the question isn't which type of building is safer. It's whether your case is routine, and who's available if it isn't. For a healthy adult getting standard toxin, a good med spa with a named injector is fine. For a prior bad result, a droopy lid, real asymmetry, a neuromuscular condition, or a filler complication, go to the physician-led practice.
This is the comparison I get asked about most, and the answer everyone expects is that dermatologists are the safe choice and med spas are the risk. That's not what the Colorado rules say, and it's not what our own scoring found either.
Legally, there's no difference
Colorado treats injecting botulinum toxin as the practice of medicine. Under Colorado Medical Board Rule 800, a physician can delegate it, but only after personally determining that the person injecting is qualified by education, training, or experience.
- Physicians, physician assistants, nurse practitioners, and registered nurses can inject under proper delegation and supervision.
- Licensed practical nurses cannot.
- Every Colorado med spa offering botulinum toxin is required to have a medical director.
A med spa isn't a loophole. It's a business model operating inside the same rule as the dermatology office. An RN injector at a med spa and an RN injector in a derm practice are working under the same delegation requirement, and in both cases a physician has signed off on their competence.
Which means the honest version of the question is narrower and more useful: who is actually injecting me, how much experience do they have with my face, and how fast can a physician get involved if this goes sideways.
What our own scores say, and what they don't
We score all 235 local providers on a published rubric. Among the 142 that offer injectables, here's how the practice types compare.
| Practice type | Local providers | Mean score | Credentials (of 25) | Mean reviews | Mean rating |
|---|---|---|---|---|---|
| Medical spa | 79 | 84.6 | 24.0 | 122 | 4.88 |
| Dermatology practice | 15 | 77.5 | 25.0 | 386 | 4.67 |
| Plastic or cosmetic surgery | 7 | 75.9 | 25.0 | 92 | 4.75 |
Injectables-offering providers only, from our launch dataset of 235. The remaining 41 sit in other categories such as skin and facial studios.
Med spas come out ahead, and I want to be straight about why, because it would be easy to use that number dishonestly. Our rubric measures how legible and accessible a practice is from public evidence. It rewards publishing your prices, letting people book online, and accumulating recent reviews that name a specific procedure. Med spas are considerably better at all three, because marketing is closer to the center of how they operate.
On credentials, the dimension that carries the heaviest weight at 25 percent, dermatology and surgical practices score a clean 25.0 and med spas average 24.0. That's close to tied, and it's the dimension that actually speaks to medical oversight.
So read our score as "how easy is this practice to verify and use," not "how good is the medicine." A dermatology practice that doesn't publish pricing and doesn't offer online booking loses points for being hard to shop, which is a real inconvenience and not a clinical failing.
What the practice types look like locally
| Practice type | Names its clinicians on the site | Offers online booking | Advertises a free consult |
|---|---|---|---|
| Medical spa (79) | 27 | 66 | 27 |
| Dermatology practice (15) | 12 | 10 | 4 |
| Plastic or cosmetic surgery (7) | 6 | 1 | 0 |
The clinician-naming column is the one I'd pay attention to. Twelve of 15 local dermatology practices name the people who work there. Twenty-seven of 79 med spas do. If you can't find out who's going to inject you until you're in the room, you've lost your main lever, and that's the single most common structural difference between the two settings around here.
The booking column runs the other way, and it's not trivial. Sixty-six of 79 med spas let you book online. One of seven surgical practices does. That convenience gap is real, and it's most of why the scores land where they do.
When to go to the physician-led practice
These are the situations where I'd skip the med spa, not because med spas are dangerous but because you want the person who can diagnose, not only treat.
- A previous bad result. Especially a droopy eyelid or brow, or a result that looked wrong rather than just underwhelming. Figuring out what happened requires someone who can assess which muscle was affected.
- Noticeable facial asymmetry. Correcting asymmetry with toxin is harder than treating a symmetric face, and it goes wrong more often.
- A neuromuscular or autoimmune condition. Myasthenia gravis and related conditions are genuine contraindications. So is being on certain medications. This needs a physician's read, not a screening form.
- Any filler complication, current or past. Vascular occlusion from filler is a time-sensitive emergency, and you want to be in a setting equipped for it.
- You need a diagnosis, not a treatment. A new or changing lesion, unexplained flushing, persistent inflammation. Aesthetic providers are not the right stop for this, and a dermatologist can do both in one visit.
- You want a surgical opinion. If the honest answer to your concern is a blepharoplasty or a brow lift, toxin will disappoint you, and the person who can tell you that is a surgeon.
When a med spa is genuinely fine
Most people, most of the time. Standard toxin for frown lines, forehead lines, or crow's feet in a healthy adult with no history of complications is routine work, and plenty of the most experienced injectors in this area work in med spas rather than derm offices. Volume matters in this skill, and med spas do the volume.
What I'd want before booking one:
- A named injector with a license you can look up, ideally the same one each visit.
- A medical director you can name, not a policy statement that one exists.
- Published pricing, or at minimum a written total before anything is opened.
- A two-week follow-up included rather than sold.
- Recent reviews that describe specific procedures, not just a friendly front desk.
The pattern worth walking away from
Across our review corpus, the practices that generate the angriest reviews aren't distinguished by being med spas. They're distinguished by a shape: the first visit arrives through a deal site or an introductory promotion, the pressure to convert to a membership starts before the treatment, no individual clinician is ever named, and when a result goes wrong the response is to defend the sale. Reviewers describe using medical vocabulary and medical equipment without medical judgment behind it.
You can spot most of that before you hand over a card. Look for a named injector and a named medical director. If the website advertises the price and the promotion but never the people, that tells you where the practice puts its attention.
Described as a pattern rather than quoted. Of 269 collected local reviews naming a toxin brand, 253 are five stars and 13 are one star, so reviews are much better at telling you a practice is pleasant than at telling you it's careful. The one-star reviews carry no reliable date in our source data, so under our quote rules they aren't reproduced here.
What to ask either one
- Who is injecting me, and what's their license?
- Who is the medical director, by name?
- How many units are you recommending, and why that number?
- What's the total cost for my areas, all in?
- If I'm not happy at two weeks, what happens, and does it cost me anything?
Both settings should answer all five without hesitating. A practice that gets uncomfortable at question one or two has told you what you needed to know, and it costs nothing to leave.
A word about what this is
I'm a medical technologist, not a physician, and none of this is medical advice. I read the Colorado rules, collect what local providers publish about themselves, and score it on a method I publish. Whether injectables are appropriate for you, and in which setting, is a conversation with a licensed clinician who can examine you and take a history. What I can tell you is that the legal standard is the same in both places, and that the individual injector matters more than the sign on the door.
If you're also weighing which product to ask for, that's covered in Botox vs Dysport, and local pricing plus the delegation rules are in the Botox guide.