Definitely the Paula’s Choice All Over Hair & Body Shampoo and the Smooth Finish Conditioner. I rarely use anything else on my hair (when I’m traveling or get a few free shampoo / conditioner samples) and they keep being re-bought. I have never found anything that works better for my hair, even professional lines. And when I try another shampoo, I get an itchy scalp. Bonus points are that they are fragrance free (I hate strong scents on my hair and body) and that I can keep one product for my hair and body.
To be honest, I probably bought more of the conditioner as I buy the PC4 Men shower gel when the regular shower gel is out of stock; it’s the same formula, only with “male” packaging, which I personally don’t care.

The Moroccanoil Light Treatment is definitely worthy of praise. I bought it many times even when I lived in Europe. I wish it was fragrance free, but it’s the best lightweight oil that tames my frizzy, thin hair.

I mean, I can add the Bumble & Bumble Heat & UV Protective Primer as well and say I could spend the rest of my life using the same hair products.

Funny thing is that people keep saying they need to switch hair products to keep the results, but I’m the complete opposite. As soon as I change something my scalp goes crazy (dandruff, itchiness) and my frizz is out of control.