Alternatives to K18 — Reddit's Picks
From 660 Reddit mentions of 4 K18 products
The short answer
Instead of Leave-In Molecular Repair Hair Mask
410 Reddit mentions of the original · original $75.00 · 50 ml
Four-minute leave-in treatment; no rinse · The catch: Protein-overload complaints: stiff, brittle, dry hair
Best Overall Alternative
Ouai·Leave-In Conditioner
Why: 88% less per ml ($0.18/ml vs $1.50/ml) · Discussed alongside the original in 19 Reddit threads
Instead of AirWash Dry Shampoo
132 Reddit mentions of the original · original $48.00 · 118.3 ml
Water-like mist dries to a clean-looking finish
Best Overall Alternative
JVN·Hair Styling
Why: 53% less per ml ($0.19/ml vs $0.41/ml) · Reddit's complaint about the original: “Can leave hair straw-dry, stiff, and hard to comb”
Instead of Peptide Prep Detox Shampoo
87 Reddit mentions of the original · original $39.00 · 251.4 ml
Salicylic acid clarifies scalp buildup · The catch: Too strong for sensitive scalps; itching, flaking, soreness, and shedding show up
Best Overall Alternative
Essentials Daily Clarifying Shampoo
Suave·Shampoo
Why: 90% less per ml ($0.02/ml vs $0.16/ml) · Discussed alongside the original in 5 Reddit threads
Instead of Molecular Repair Hair Oil
31 Reddit mentions of the original · original $65.00 · 29.6 ml
Lightweight, non-greasy finish
Best Overall Alternative
Verb·Hair Oil
Why: 83% less per ml ($0.37/ml vs $2.20/ml) · Reddit's complaint about the original: “Seals more than it moisturizes; softness can remain unchanged”
nextbest surfaces what Reddit actually recommends. “Where to buy” links are affiliate links — we may earn a small commission at no extra cost to you.