This volumizing shampoo gives fine, flat hair a boost where it counts the most: at the roots. hydrolyzed collagen helps strands feel fuller, while hydrating ingredients like macadamia oil, shea butter, and coconut oil adds shine and nourishment without weighing hair down, making it look limp. As a nice bonus, it’s sulfate- and paraben-free, so it’s safe for color-treated hair, plus it comes housed in a recyclable bottle.
What our testers say: “I’ve been using this shampoo and conditioner for about 2 to 3 weeks, washing my hair twice a week instead of my usual once-weekly wash,” says Bailey Gann. “It was super easy to add into my routine, has an incredibly clean scent, and lathers really well when massaging the scalp. It’s also very lightweight.” After just a few weeks, her roots already feel healthier and there’s a noticeable boost in volume. “I often wear my hair slicked back or pulled up, but after washing, it felt so healthy and more voluminous that I could wear it down naturally for a few days in a row.”
Best Custom Hair Growth Shampoo: Prose Custom Shampoo
- What we like: Specifically formulated to target individualized concerns; sulfate-free; color- and keratin-safe
- Worth noting: Our tester thought the texture was a bit heavy
If a one-size-fits-all shampoo has never quite worked for you, Prose might be the answer. Each formula is made-to-order based on your hair type, texture, density, and goals—so, for example, you could tackle oily roots and thinning at the same time. The brand uses naturally derived, science-backed ingredients like biotin, acacia collagen, and apple cider vinegar, but exactly what ingredients are in your bottle are up to you and the information you provide about your unique concerns. We love how seamlessly it fits into a full routine, too. You can pair your custom shampoo with a personalized conditioner, scalp serum, hair mask, and more, making it one of the most comprehensive hair-care systems out there.
What our testers say: Tester Nancy Laobak, who has fine, straight hair and is dealing with postpartum hair loss, said she noticed real improvement after about a month. “My hair looks noticeably sleeker, shinier, and softer overall,” she says. “It gave my hair a normal amount of volume without weighing it down, and it helped my hair stay fresher for longer between washes.” While she didn’t see a dramatic change in fullness, she appreciated how healthy her hair looked and felt—especially paired with the matching conditioner. “It melted into my hair easily without leaving residue,” she says. “My hair felt hydrated and nourished but not weighed down.” Her only critique? “The texture felt a little too viscous and plasticky for me.”

 

 


 
 
