What US salons charge for keratin treatments, how to set your price by market and hair type, and how upgrades raise the average ticket without resistance.

A ready-to-use aftercare protocol salons can hand to clients after a keratin treatment — the washing schedule, products, and habits that protect results for up to 6 months.

Professional keratin treatments last 3–6 months. What determines longevity, and the levers salons control to keep clients smooth until their rebooking.

What formaldehyde-free keratin treatments are, how CarboCysteine chemistry works, why some formulas feel weaker — and how professionals close the strength gap.

How much does a keratin treatment actually cost a salon per client, and what does one bottle return? A transparent breakdown of product cost, service revenue, and profit per bottle.