@drspf's steroid injection claims for acne, fact-checked

What did @drspf actually say?

The creator, who presents as a dermatologist, pitched intralesional Kenalog (triamcinolone acetonide) as a fast fix for a single stubborn cystic pimple before a big event. The pitch is reasonable on its face. They said relief comes "within the next 24 to 48 hours," warned that improper dilution causes skin atrophy, and pushed back against using injections as a long-term strategy. They closed by urging viewers to see a dermatologist for actual acne control, not just spot treatments.

Worth noting: the video was categorized under TRT and testosterone replacement therapy. That categorization is wrong. This video is about dermatology, not hormone optimization. There is no testosterone content here. That mislabeling matters when you're trying to understand what kind of professional is speaking and in what context.

Does the science back this up?

Yes, largely. Intralesional corticosteroid injections for nodulocystic acne are well-established in dermatology. The mechanism is straightforward: triamcinolone suppresses local inflammation by inhibiting prostaglandin synthesis and reducing vascular permeability. The 24-48 hour timeline the creator cites is consistent with clinical observation, though most literature describes significant flattening within 24-72 hours depending on lesion size and concentration used.

A review by Levine and Rasmussen (2000, Dermatologic Surgery) confirmed that intralesional triamcinolone at concentrations of 2.5-5 mg/mL is effective for rapid reduction of inflammatory nodules with minimal systemic absorption. The skin atrophy warning is also evidence-based: Friedman et al. (2010, Journal of the American Academy of Dermatology) documented that concentrations above 5 mg/mL increase atrophy risk significantly, which is exactly what the creator flagged about improper dilution.

What did they get wrong (or right)?

They got the core clinical content right. The dilution warning is genuinely important and under-discussed in social media skincare content. Most injector-related atrophy cases involve concentration errors, not technique errors, so flagging that specifically deserves credit.

What they glossed over: the 24-48 hour timeline can be optimistic for deeper nodules. Some lesions, particularly larger cysts with significant fibrotic walls, may take 5-7 days for meaningful reduction. Telling someone with an event in 24 hours to get a shot that morning is not always going to deliver the promised result. The creator also did not mention the risk of post-inflammatory hyperpigmentation that can follow rapid lesion collapse in darker skin tones, a clinically significant omission for a broad TikTok audience.

The hormonal acne section was accurate, correctly flagging the jawline pattern in women ages 25-40 as a hormonal signal requiring systemic management rather than repeated injections.

What should you actually know?

If you have a cystic lesion and an event, here is the practical reality. Intralesional triamcinolone works, but timing matters. An injection 3-5 days before an event gives better odds than the morning before. The standard concentration used in most dermatology practices is 2.5-5 mg/mL; anything higher is where atrophy risk climbs. A 30-gauge needle is appropriate, as the creator stated, and the injection volume should be small enough to blanch the lesion slightly without flooding adjacent tissue.

Do not attempt to replicate this at home. Triamcinolone is a prescription medication and intralesional injection requires anatomical knowledge. Misplaced injections near the eye or over temporal vessels carry real risk. The creator is right that this is a dermatologist visit, not a DIY procedure.

For anyone with recurring jawline or chin cysts, hormonal workup and long-term management options like spironolactone, oral contraceptives, or isotretinoin are far more appropriate than a standing monthly injection appointment. Injections are a rescue tool, not a treatment plan.