Full Formula
Twelve ingredients, each doing a specific job. Tap any one to see what it does.
Penetrates the hair shaft to help reduce protein loss during washing and styling, keeping strands stronger over time.
Seals in moisture and softens hair without weighing it down or leaving residue.
A gentle mineral clay that absorbs excess oil at the scalp and root, adding natural texture and lift.
Locks in moisture and gives the clay long-lasting, reworkable hold through the day.
A stronger mineral clay that provides firm, flexible hold and a clean matte finish.
A natural plant starch that keeps the finish matte, never greasy.
Fills in damaged areas along the hair shaft, plumping and strengthening each strand from the outside in.
Studied for its ability to penetrate the scalp and stimulate hair follicle activity.
Matched a leading topical hair treatment for hair count in a 6-month clinical trial.
Adds a subtle, grounded fragrance with a long history of traditional use for calming the scalp.
Protects the formula's oils from going rancid over time and adds a light natural finish.
Gives a cooling, stimulating feel on the scalp with each application.
Ingredients Studied for Hair Growth & Thickness
Four ingredients in this formula have real clinical research behind them for growth, density, or strand strength — here's the actual science, not just a claim.
Rosemary Oil vs. 2% Minoxidil
In a six-month clinical trial, researchers compared topical rosemary oil directly against 2% minoxidil. Both groups saw a significant increase in hair count by the end of the study, with no meaningful difference between the two treatments. Differences weren't visible until after the three-month mark, which is why consistent daily use matters.
Overview of Natural Alternatives for Androgenetic Alopecia, with Special Emphasis on Rosemary Oil
This summarizes published research on this ingredient. Individual results with Olden may vary, and this research does not represent a clinical trial of the Olden product itself.
Nine Clinical Trials on Topical Caffeine
A 2024 systematic review examined clinical trials testing topical caffeine against hair loss, covering nearly 700 participants across nine separate trials. The review found consistent support for caffeine's ability to penetrate the hair follicle and stimulate cell activity linked to hair growth.
Caffeine as an Active Ingredient in Cosmetic Preparations Against Hair Loss: A Systematic Review
This summarizes published research on this ingredient. Individual results with Olden may vary, and this research does not represent a clinical trial of the Olden product itself.
Early Research: Peppermint Oil and Hair Growth
In a controlled study using mice, topical peppermint oil was compared against saline, jojoba oil, and minoxidil. The peppermint oil group showed the strongest results across several measures, outperforming the minoxidil group on some. This research has only been conducted in animals so far — no published human clinical trials exist yet.
Overview of Natural Alternatives for Androgenetic Alopecia — peppermint oil section
This summarizes published research on this ingredient. Individual results with Olden may vary, and this research does not represent a clinical trial of the Olden product itself.
Repairing the Strand, Not the Root
Hair is roughly 90% keratin, and daily wear, heat, and UV exposure gradually break that protein down. Hydrolyzed keratin is small enough to penetrate the hair shaft rather than sitting on the surface. A peer-reviewed study found hair treated with hydrolyzed keratin maintained its tensile strength after UV exposure, while untreated hair lost over 14% of its strength.
Performance and Mechanism of Hydrolyzed Keratin for Hair Photoaging Prevention
Unlike the ingredients above, hydrolyzed keratin works on the existing strand, not the follicle or growth cycle.