I swapped my entire hair routine for this little bottle of Act+ Acre serum for 30 days. My scalp went from “meh” to actually calm.
The real shocker? I stopped needing to wash my hair every single day. That never happens.
The Cold Processed Scalp Serum is $54 for 2.4 oz. The brand claims it rebalances your microbiome and extends time between washes—I called bullshit. Then I tried it.
Prebiotic Complex
Feeds the good bacteria on your scalp so the bad stuff stops throwing parties.
Cold Processing
Keeps the active ingredients alive. Heat would kill them, so they never use it.
No Water Fillers
It’s pure plant extracts and oils. Not the 90% water most serums hide behind.
Photo: Adam Winger / Unsplash
Rosemary oil is the star—it boosts circulation to wake up hair follicles. Glycerin pulls moisture in without greasiness. Peppermint gives that tingle that tells you it’s working.
The formula is clean enough to eat, which matters when it’s sitting on your skin all day.
- Rosemary Leaf Oil: Stimulates blood flow to follicles
- Glycerin: Humectant that hydrates without weight
- Peppermint Oil: Cooling sensation + scalp stimulation
- Bamboo Extract: Strengthens hair at the root
Photo: Lindsay Cash / Unsplash
It’s a lightweight oil that absorbs in 60 seconds flat. No slick residue, no “did I just oil my scalp” regret. The dropper makes it easy to part your hair in sections and get right to the skin.
Week two was rough—I had a minor flake purge. My scalp was pushing out dead skin like it was detoxing. Week three? Completely clear. That’s when I stopped doubting it.
Photo: TYMO Beauty / Unsplash
My hair felt thicker by week three—not in a “miracle” way, but in a “my part isn’t looking so wide” way. Itching gone by day 10. I stretched washes from every day to every other day, and my roots stayed clean.
Photo: Tim Mossholder / Unsplash
It’s not a miracle in a bottle, but it’s the most consistent scalp product I’ve used—and I’ve tried a lot. If you want a healthy scalp without harsh chemicals, this is it.