Comedian Jerry Seinfeld hasn’t always been known for his luscious locks, but that’s changed since he started using a new treatment, Restore, from celebrity hairstylist Julien Farel.

“Last time I went to his apartment, he told me, ‘Look [at my hair], it must be [due to] your product,’ ” says Farel.

Restore, which is also used by Ivanka Trump, Rafael Nadal and Lauren Bush, and launched this month, took five years to develop and is applied to the hairline of dry locks instead of ordinary shampoo and conditioner.

After adding a touch of water, lathering, combing through and rinsing, the vitamin-infused elixir promises to return hair to its virgin state by cleansing the scalp and reversing damage. Farel even says you can blow dry without styling products. Now Jerry can agree with his TV bestie, George Costanza, who said: “Thick, lustrous hair is very important to me.”