It's a not-so-secret weapon that can have a truly transformative effect on hair in need of some extra nourishment and TLC. The brand's formulas are hypercharged with potent ingredients that give both scalp and strands a reboot.

The Scalp Revitalizing Solution Miracle In-Shower Treatment lives up to its name, according to the many shoppers who say it's spurred new growth and left hair looking better than ever.

It's down to the cocktail of strengthening ingredients formulated to work in only five seconds to leave hair smoother and softer, including arginine (an amino acid that supports vital protein production), softening panthenol (vitamin B5), niacinamide to stimulate new growth, and salicylic acid for optimal scalp health.

The premise behind the treatment is multifaceted, as it's formulated to improve the condition of both your scalp and your hair. That's crucial, as it minimizes hair loss due to breakage, moisturizes, and volumizes hair to leave it looking fuller and lusher.

And using it for five seconds really is the key — take the time to massage it into your scalp and it will transform into a luxuriously creamy consistency that feels amazing.

The biotin- and prebiotic-packed treatment does your hair a world of good, all while imparting a pleasant lemon verbena and herbal aroma that's crisp and fresh. Is it any wonder that the reviews are so exceptional?

'My daughter can't live without this now,' raved one shopper. 'Her hair is so healthy and shiny. And it thickened my hair, too.'

Another agreed, writing, 'This product is a major game-changer. My hair was super soft after rinsing it out! Totally worth the hype.'

If you're not happy with your hair, there's no time like the present to make a change to your routine. With the Dr. Groot Scalp Revitalizing Solution Miracle In-Shower Treatment in your arsenal, you'll experience quick results that completely transform your look! Shop it here.