After 13 years of creating products to combat razor burn, bumps on the neck and other shaving woes, the men’s grooming company Jack Black decided it was time to attack the problem at the source. And so last year, the company, instead of embracing new technology, began selling a nearly 150-year-old invention: the safety razor.

“You can be using all the right skin-care products, but if you’re not using the right razor, you’re not going to get the best results,” said Emily Dalton, a co-founder of Jack Black. “Shaving with multiblade cartridges is very irritating.”

The venerable safety razor — often a double-edged razor (a single blade with two sharp sides) — is having a renaissance. Baxter of California, a nearly 50-year-old brand, began selling the razor in 2009; sales grew steadily by 40 to 60 percent a year, then tripled in the last year, according to company figures.

At the Art of Shaving, which has 155 stores nationwide, sales of safety razors have increased 1,000 percent from 2009 to 2014, a company spokesman said.