It seems Blake Brown isn’t the only thing in Blake Lively’s hair care arsenal.

The “Gossip Girl” alum took to Instagram Stories on Wednesday, sharing a cozy snap of herself wearing the iRestore Professional, a red-light therapy device designed to help with hair growth.

“If I don’t look like I’m in the first trimester of life after this much effort, I quit,” she wrote, quipping, “Natural beauty is effortless.”

She also included a thought bubble reminiscing about when beauty routines were simpler, saying, “I miss the 2000s when we just used that handsoap with fish characters on it on our face & called it a day.”

Though Lively’s futuristic-looking cap comes with a hefty, $799 price tag, iRestore says it’s designed to help increase hair density, naturally thicken strands and boost hair growth.

The device is FDA-cleared to use at home three times a week, for 25 minutes at a time.

So how does it work? The helmet covers the entire scalp, targeting inactive follicles in the hairline, temples and crown. No needles are involved; the treatment is entirely non-invasive, drug-free and painless. It’s equipped with Lumitech red light therapy, featuring 282 laser and LED diodes.

Lively isn’t the only star using a red light device for hair growth, as Hudson Williams included iRestore’s Essential helmet in his viral beauty routine video last year. (“I have a fear that I’ll look like Ryan Gosling’s ‘Blue Valentine’ character when he ages,” he told The Cut.)

Courteney Cox also previously wore the HigherDose Red Light Hat in a post-workout video, while Naomi Watts uses the Laduora Duo 4-in-1 Scalp & Hair Care Device.

“She had been talking about hair loss and hair breakage for a while last year … I told her ‘use it every day and let’s see the results,” Watts’ hairstylist, Robert Vetica, told InStyle, noting that five months later “there was a 25 to 30 percent increase in her hair growth and density.”

While red light masks and recovery devices are more popular use cases, if celebs are any indication, scalp devices just might be the hottest beauty tech for fall.