Best conditioner and shampoo I’ve ever…
Best conditioner and shampoo I’ve ever used, revived my hair
By Anthony T.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
6 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Formula F=kx is a haircare company focused on creating quality products for men with curly hair. Created by Fred, a chemical engineer who was tired of sub-par products being pandered to men. Formula F=kx's mission is to equip men with products and knowledge for great-looking curls.
formula F=kx (formulafkx.com) has 6 customer reviews on The Fair Hearing, with an average rating of 5.0 out of 5.
Showing 6 reviews with 5 stars · Clear filters
Best conditioner and shampoo I’ve ever used, revived my hair
By Anthony T.
This is always a very good experience. I love the shampoo and conditioner. My hair always looks great after I use Formula (if I do say so myself =-). I would strongly recommend the shampoo and conditioner. I haven't tried the other products.
By jan
The product shipped quickly and I'm very pleased with it. I appreciate the blog posts and guides. These help with finding a product that works. I've tried plenty of products out there but none besides this one has been able to do what I need it to do.
By Andy
Great customer service and products. One of the items we ordered was out of stock, but Fred (owner?) emailed and told us he had a box in his office. He was out of town, but shipped the item 2 day air when he returned, and provided email updates. Will definitely be ordering from them again.
By Andrew D.
Loving my new hydrated and moisturized curls with the 3 pack combo it’s perfect. It also smells really good, absolutely loving this product it’s perfect in all categories although it’s only downside is that it’s pretty pricey for the size of the bottles, however it’s real quality stuff so I definitely would buy from again.
By Tim B.
Great products, the conditioner is my favorite. The shampoo was very gentle on my scalp, and the curl cream added curls without being crunchy.
By Adam C.