ERK5 shares high identity with ERK1/2 but has a unique and extended C-terminal tail (410816 aa), which contains a nuclear localization signal sequence, a myocyte enhancer factor 2 (MEF-2)-interacting domain, and a transcriptional activation domain [29]
The derm shares that it's an affordable option that "includes multiple peptides targeting follicle health and scalp condition." She adds that it's "good for early thinning and maintenance." While you may know Neutrogena best for its skin care, the brand started creating hair formulas to target growth concerns late last year
Its cheaper to source and more widely used in the energy drink market
Because both switches are addressed inside one vial, the blend is generally studied on its own rather than layered onto further GH compounds adding a third secretagogue would target an already-cleared bottleneck with diminishing return and rising IGF-1/glucose risk
Karantanos T, Evans CP, Tombal B, Thompson TC, Montironi R, Isaacs WB
Use conditioner only if your hair is longer than your neck length