TRT and acne: separating the hype from the hormone science

What did @calxshreds actually say?

The creator describes a personal protocol he used to address cystic acne scarring on his back and shoulders after what he calls "messing up" his hormones on TRT. His stack, in his own words: topical tretinoin, human growth hormone (HGH), "injectable GHK," and a branded skin cream called Gen-Core. He claims the scarring "pretty much all cleared up" in "about two to three months." He links to specific products in his bio and mentions a "ROM chat" for obtaining other items in the stack.

This is not a casual skincare routine. This is a polypharmacy stack involving a prescription-only growth hormone, a peptide being injected, and a topical retinoid. The creator is also actively directing viewers to purchase these products. That distinction matters a lot.

Does the science back this up?

Tretinoin has real evidence behind it. HGH has some skin data, but it is not a standard acne scar treatment. GHK-Cu has early-stage science that is interesting but nowhere near conclusive. The branded cream is unverifiable.

Tretinoin (all-trans retinoic acid) is the most defensible part of this stack. It stimulates collagen synthesis, promotes keratinocyte turnover, and has decades of peer-reviewed support for improving atrophic acne scars. Zasada and Budzisz (2019, Advances in Dermatology and Allergology) reviewed retinoid mechanisms and confirmed clinical improvement in scar texture and pigmentation with consistent use.

Human growth hormone does influence skin. IGF-1 signaling promotes fibroblast activity and collagen production. But HGH is not studied or approved for acne scar treatment. Using it off-label for cosmetic skin improvement in someone without diagnosed GH deficiency is unsupported by clinical guidelines and carries significant risk, including glucose dysregulation, fluid retention, and potential carcinogenic concerns with long-term use.

GHK-Cu (copper tripeptide-1) has shown collagen-stimulating and anti-inflammatory properties in cell studies and some small human trials. Pickart et al. (2015, Journal of Aging Science) described its wound-healing and skin-remodeling potential. But injectable GHK is not an approved drug. The leap from promising peptide research to injecting it for acne scar resolution is a big one that the current evidence does not support cleanly.

What did they get wrong (or right)?

Tretinoin: credit where it is due. The HGH and injectable GHK claims: oversold and potentially dangerous framing. The branded cream recommendation is essentially an advertisement.

The creator is right that tretinoin helps with scarring. That is not controversial. He is also correct that TRT can trigger cystic acne, particularly when estrogen and DHT levels are not managed properly. That acknowledgment of hormonal mismanagement is at least honest.

Where this falls apart is the attribution of dramatic results to a four-product stack with no way to isolate which intervention did what. Claiming the Gen-Core cream helped "the most out of anything" while simultaneously running HGH and a proven retinoid is not a serious analysis. It reads as a product promotion dressed as a personal testimony.

The recommendation to use injectable GHK without any clinical context, dosing discussion, or mention of sourcing risks is irresponsible. Peptides sold outside pharmacy channels vary wildly in purity. And directing viewers to a "ROM chat" to acquire these substances raises real regulatory questions.

What should you actually know?

If you have post-acne scarring from TRT, there are evidence-based options. An off-label HGH protocol is not the starting point, and a TikTok stack is not a treatment plan.

Atrophic and post-inflammatory scarring from cystic acne is genuinely difficult to treat, and it does cause real distress. But the evidence hierarchy here is clear. Tretinoin and other retinoids have the strongest topical evidence. For deeper scars, dermatologist-performed procedures like microneedling, chemical peels, and laser resurfacing have randomized controlled trial data behind them. Fabbrocini et al. (2014, Journal of Cosmetic Dermatology) demonstrated significant improvement in acne scar severity scores with combined microneedling approaches.

HGH use in people without diagnosed growth hormone deficiency is not approved by the FDA for cosmetic or anti-aging purposes. It is a Schedule III controlled substance in the US context. Framing it as a skin treatment add-on for people watching a TRT TikTok is the kind of thing that sends people down expensive and risky rabbit holes.

If you are on TRT and developing acne, the first conversation should be with your prescribing clinician about estrogen management, DHT sensitivity, and whether your protocol needs adjustment. That is where this video should have started.