By Melissa, founder & chemist, Lone Tree Tallow
Short answer: our Exosome + GHK-Cu Serum is the most complete formula we make. It pairs exosome signaling with 1% copper peptide and a full supporting deck — niacinamide, panthenol, hyaluronic acid, centella, and mushroom ferments — so your skin gets both the message to renew and everything it needs to act on it. It's built for the specific way skin changes in perimenopause and menopause, and it's designed to finish with a tallow seal. Preorder now; ships July 22.
This is our flagship, and I didn't build it to have a trendy word on the label. I built it because signaling actives are only as good as the formula around them — and most exosome serums forget that. Here's exactly what's in it and why.
The idea: signal, feed, seal
Great skincare for mature skin does three things: it tells the skin what to do, it gives the skin what it needs to do it, and it protects the work while it happens. Most products only do one. This serum is built around the first two, and our tallow line finishes the third. That's the whole philosophy in three words — signal, feed, seal.
The signals: exosomes + copper peptide
Exosomes are microscopic vesicles that carry cell-to-cell renewal messages — a broad instruction set encouraging skin to support collagen, hold moisture, calm, and strengthen its barrier. (I explain the whole category, honestly including where the science is still maturing, in What Are Exosomes in Skincare?)
1% Copper peptide (GHK-Cu) is the focused second signal — a fragment your body makes that specifically prompts collagen and elastin support. Pairing a broad renewal signal with a targeted rebuild signal is deliberate: they harmonize, covering more ground than either alone. (More in Exosomes vs. Copper Peptides.)
The feed: why the whole deck matters
A signal with nothing to build from is just noise. So every supporting ingredient earns its spot:
Niacinamide supports the barrier, evens tone, and helps with the look of pores. Panthenol (pro-vitamin B5) soothes and holds water. Sodium hyaluronate is the moisture magnet that keeps skin plump enough to look and act resilient. Centella asiatica and reishi and shiitake ferments bring calming antioxidant support, keeping the whole environment soothed while the slow renewal work happens. Aloe and glycerin form a gentle, hydrating base instead of a stripping one.
Nothing in this bottle is riding along for the ingredient list. Each piece is there so your skin can actually answer the signals it's being sent.
Why it's built for perimenopause and menopause
When estrogen declines, the change is fast and specific: collagen can drop by about a fifth in the early years, elastin frays, skin holds less of its own hyaluronic acid, the barrier thins, and renewal slows. That's why so many women feel their skin changed almost overnight.
This serum is aimed straight at that cascade. The exosome and copper-peptide signals encourage the collagen and elastin support your skin is no longer prompting strongly on its own. The hyaluronic acid, panthenol, and glycerin replace the water-binding it has lost. The niacinamide and calming botanicals rebuild the resilience estrogen used to help maintain. It won't reverse menopause — nothing does — but it meets the exact things that change, which is the most honest promise I can make.
How it works with tallow
This is the seal. The serum delivers water-phase signals and humectants into the skin; a tallow balm then locks everything in with the same lipids your skin makes. Apply the serum to clean skin first, let it absorb, then finish with a balm like Blue Hour or a facial oil. The humectants pull moisture in; the tallow keeps it from evaporating right back out, and rebuilds the barrier on top. The active line and the tallow line were always meant to be used together — this is the pairing they were designed for.
How to use it
A few drops on clean skin, morning or night, before heavier oils or balms. If you already own a separate copper peptide serum, you don't need it on top of this one — the copper peptide is already here. Give any collagen-support routine eight to twelve weeks before you judge it.
High-intent questions, answered
Do topical exosomes actually work? The science is promising and still maturing, with the strongest evidence from in-clinic use. We formulate for the look and feel of healthier skin and pair the exosomes with proven supporting actives rather than relying on them alone — and we won't make miracle claims.
Is it safe for perimenopausal and menopausal skin? Yes — it's non-retinoid and non-acid, which hormonally shifting skin often tolerates best. Patch test first.
Can I use it with retinol or vitamin C? Yes; just give strong vitamin C or acids their own time of day. The serum already includes copper peptide, so no separate one is needed.
Can I use it after a facial or microneedling? Many people love a calming serum during recovery, but follow your provider's aftercare timing first.
Is it vegan? When does it ship? It is not vegan — it contains royal jelly — and it's not tested on animals. It's available for preorder now and ships July 22.
Written by Melissa, founder and formulating chemist at Lone Tree Tallow. This serum is a cosmetic formulated to support the look and feel of healthy skin; it is not intended to diagnose, treat, cure, or prevent any disease or condition.