‘I wanna buy more bottles!’ Ulta shoppers rave about $12.99 ‘holy grail’ growth oil that makes hair ‘fuller & thicker’

A HAIRCARE product is all the rage with shoppers, saying it made their locks thicker.

The beauty buy is causing a stir and won't break the bank.

It promises a formula that is gentle enough to use on a daily basis.

It also boasts a non-greasy finish that feels "lightweight" instead of heavy and oily.

The scalp oil also includes ingredients that are proven to help with hair growth, including biotin.

HOW DOES IT WORK?

The product can be used after washing or on a dry scalp.

After massaging it into the skin, there is no need to wash out any of the product.

Those looking for thicker hair are instructed to style as usual and let the magic get to work.

The scalp oil works on all hair types due to its gentle formula.

Several Ulta shoppers chimed in on the product, saying it changed their hair for the better.

"Definitely buy," one wrote. "I'm on my fourth bottle right now and the results are amazing.

"It made my hair fuller and thicker. 10 out of 10. I put oil in my hair once a week."

"Holy grail of hair products," another added. "Love this hair line. Legit the best thing ever will never use anything did."

"Ahhh I love it," a third gushed.

I’m a hairdresser - the tell-tale sign that lets me know IMMEDIATELY if you go to bed with wet hair, please just stop

"I bought this and I use it every hair wash day, I'll leave it on for four to five hours then shower.

"It leaves my hair so shiny, smooth, soft, tangle free, smelling good, you name it. I wanna buy more bottles.

"I 100% recommend for hair growth, too."

"I swear by this stuff," yet another wrote. "This is the best hair growth oil."

"I have had multiple people — even hairstylists — tell me how nice my hair is since using it.