Of all the treatments I tried, this one was the most complicated -- and also the most time-consuming. It took about 90 minutes, and if you have thick hair, expect to be there for at least two hours. The results also lasted the longest: I had smoother hair for a few weeks. The process is similar to a keratin treatment: the stylist shampoos your hair, applies a keratin cream, blow dries and flatirons the product into your hair, and then washes it again before blowing it out. Unlike most keratin treatments, you can put your hair up into a ponytail and wash it as soon as you want. Think of it as Keratin Light. It will give you smoother hair, but don't expect a complete transformation.

Price: $200

Where to get it: Julien Farel salons in New York City and Miami

When this new mask launches in September, hightail it to the nearest Sephora. I used it one time -- letting it sink in for about 10 minutes -- and my hair was incredibly silky, shiny, and smelled like a high-end flower shop for days. It's made with botanical oils that really do nourish your hair, and it has cleansing properties to remove residual chlorine and product buildup.

Price: $39

Where to get it: Sephora, Ulta, Nordstrom, etc.

The Biolage Advanced Fiberstrong line has a shampoo, conditioner, leave-in cream, and a fortifying treatment for at-home use, but the in-salon treatment is the super-charged hero. Tests show that one treatment makes hair 12 times stronger -- 12! It left my hair shiny and bouncy, and my breakage-prone ends have looked better ever since.

Price: $50

Where to get it: matrix.com for salons

Within 30 seconds of meeting British celebrity hairstylist Michael Van Clarke, I liked him -- and I knew he was going to do good things for my hair. I can't resist that accent, and he openly bagged on Kate Middleton's signature hair. (He thinks it's well-styled, but the cut is just meh.)

I road-tested the Pre-Wash Treatment, a thick cream you apply to dry hair before you shampoo. The instructions say to let it sit for an hour, so I slathered it on, put my hair in a knot, and headed to the gym. Sixty minutes later, I washed and conditioned with the 3 More Inches shampoo and conditioner and dried my hair with a blow dryer and round brush. The treatment contains cashmere proteins that penetrate each hair strand to strengthen the weak spots -- and you apply it before you wash so there's no residue on the hair from your shampoo and conditioner. While I can't vouch for what happens on a microscopic level, I can tell you that my hair felt stronger and looked healthier after using the product.

Price: $38

Where to get it: SpaceNK.com

The hair oil trend is hard to deny (it's just a matter of time before Supercuts starts offering Argan oil treatments). For the oil connoisseur, there's Rahua -- a natural, organic line with ungurahua oil (yes, the name is real) from the Amazon. The oil is derived from the ungurahua nut, which grows in the rain forests of Ecuador, and it's been used to treat dry, itchy scalp issues for centuries. This fall, Rahua is offering an in-salon treatment that takes their Rahua Omega 9 Mask and kicks it up a notch with even more oil.

I stopped by the Mizu Salon in New York City to experience it for myself. After a double wash with the Rahua Voluminous Shampoo, my stylist combined the mask with a dropper-full of straight ungurahua oil. The oil cleanses and detoxifies the scalp, and it feels warm and tingly while it works. While the nutty scent takes some getting used to -- it's like Argan-meets-espresso -- the silky hair definitely doesn't.

Price: $60-75 excluding blowout

Where to get it: rahua.com for salons