If you ask me, the best spring accessory is a full and bouncy head of hair. And since many of us weren’t blessed with naturally thick locks, we must rely on nourishing products to give our strands some extra oomph. Just in time for warmer weather, Amazon shoppers put me on to the Soapbox Oh My Growth Hair Growth Treatment, which happens to be on sale for just $8. 

In addition to its budget-friendly price tag, the lengthening product stands out because of its all-star ingredients. The formula is made with biotin to thicken strands, vitamin A to improve scalp health, vitamin C to protect the skin and hair from environmental damage, vegan collagen to strengthen hair follicles, and an omega-3 blend to increase shine. It’s also free of silicones and parabens and safe to use on color-treated hair, per the brand. 

For the best results, Soapbox recommends using the treatment three to five times a week. All you have to do is massage a few drops into freshly shampooed hair, let it sit for five minutes, and rinse it out. And if that wasn’t enough to convince you, the brand donates a bar of soap to someone in need with every purchase — it’s a win-win. 

In the product’s reviews section, many shoppers shared their positive experiences using it. “After even my second time using it, I could tell my hair was stronger, softer, and shinier,” one person said. Someone else “noticed a significant improvement in the length and thickness of [their] hair” within a few weeks of use, adding that their “locks are not only growing faster, but they also appear shinier and more resilient.” Plus, a third reviewer said their hair “feels really healthy” and they’ve “noticed a good amount of length in a short time.” 

An $8 effective hair-thickening product that gives back? It doesn’t get much better than that. Grab a bottle of the Soapbox Oh My Growth Hair Growth Treatment while it’s still on sale and shop more formulas from the brand on Amazon, below. 

Shop More Hair Growth Products on Amazon

Mielle Organics Rosemary Mint Scalp and Hair Strengthening Oil

Bellisso Biotin Shampoo and Conditioner Set

Tomum 5% Minoxidil Hair Growth Spray