Everything you need. Nothing you don't.
Most serums bury two working ingredients inside forty-nine and never say how much of either is in there. We build the opposite: a handful of peptides at disclosed concentrations, tested in the finished bottle by an independent university lab.
This category runs on trust us.
Pick up almost any peptide serum. The label lists a proprietary peptide complex and never says how much of anything is inside. No percentage, no test, no way to check. You are asked to take the brand's word for it.
We started PLU to be the version you do not have to take on faith: a short ingredient list, every active at a disclosed concentration, and each finished formula tested by an independent university lab, with the reports published where anyone can read them.
Short ingredient lists
Six ingredients or fewer, every time. Every one earns its place.
Disclosed concentrations
1% copper peptides and 1% Acetyl Tetrapeptide-3, printed on the label, not hidden inside a blend.
Made in the USA, 30-day returns
Formulated and produced domestically, backed by a 30-day money-back guarantee.
Tested in the finished bottle
Actives verified by LC-MS at the University of Illinois at Chicago, at or above label claim. Heavy metals screened by ICP-MS.
Built by a family, around a short list
PLU started the way a lot of good things do: with brothers and a problem none of the products on the shelf could solve. One of us had tried minoxidil and dealt with the irritation. Another went deep into the published research on copper peptides.
Sourcing them meant gambling on overseas suppliers, six to eight week shipments, and concentrations that rarely matched the label. So we built the thing we wished we could have bought: peptides at the concentrations actually studied, and nothing else. We run it like a family operation, because that is what it is.
Rob, Pete, Lu, and Dan
Three focused formulations
Each PLU product is built around its peptides, at concentrations printed on the label and verified by an independent lab.
GHK-Cu Face Tonic
GHK-Cu Hair Tonic
AHK-Cu Hair Tonic
Frequently Asked Questions
How long until I see results with copper peptides?
Real results take time and consistency. Most users notice initial improvements in skin texture or hair appearance within 4-8 weeks of daily use. Significant changes in skin firmness appearance or hair density typically become visible after 3-6 months of consistent application. The founder's before and after photos represent years of daily use - quality copper peptide formulations work, but they require commitment.
Can I use Face Tonic and Hair Tonic together?
Yes, absolutely. Both products work through complementary peptide mechanisms and can be used together as part of your daily routine. Apply Face Tonic to clean facial skin and Hair Tonic to your scalp - both absorb in seconds. Total application time is under 60 seconds for both products. Many customers use both products daily for comprehensive peptide support.
Why don't you include hyaluronic acid or vitamin C?
We keep each formula to the peptides and their carriers, so the concentrations we verify are the concentrations you get. Hyaluronic acid and vitamin C are good ingredients; layer them after the peptides absorb, at whatever strength you prefer.
What makes PLU different from other peptide brands?
Three things. (1) Multi-peptide systems: GHK-Cu paired with palmitoyl peptides for skin or Acetyl Tetrapeptide-3 for hair, not GHK-Cu alone. (2) Disclosed concentrations: 1% GHK-Cu, 1% AHK-Cu, and 1% Acetyl Tetrapeptide-3 on the label, and the Face Tonic's palmitoyl peptides dosed as raw peptides rather than a pre-diluted blend. (3) Published testing: every finished formula is tested by the Mass Spectrometry Core at the University of Illinois at Chicago, actives by LC-MS at or above label claim and heavy metals by ICP-MS, with the reports public on our lab results page.
How do I use these products in my routine?
Face Tonic: Apply 2-3 drops to clean, dry facial skin once daily (morning or evening). Allow 30 seconds to absorb. Layer other products separately if desired.
Hair Tonic: Apply 2-3 drops directly to scalp in areas of concern. Massage gently. No need to rinse. Use once daily on clean, dry scalp.
For deeper reading on why topical application outperforms injections, see our topical vs injectable copper peptide research.
If we claim it, we test it.
Short formulas. Disclosed concentrations. Verified by an independent university lab, and used in under thirty seconds a day.