The singer has had a hair transplant, saying his thinning hair was making him miserable.
Gareth, 33, added his looks are important to him as his job sees him performing on stage.
“I had a big deal with the hair company Wella and I was known for having this great hair,” he told The Sun. “However, as I’ve got slightly older, my hair is starting to thin a bit.
“I’ve always wanted long hair, but I’ll be happy with dense, thick hair with a better hairline — maybe I’ll even go back to my spiky days.”
He added: “I’m constantly on stage so image is a big, big thing for me and I have to look my best.”
The former Pop Idol star said he wanted to take the stigma surrounding the procedure away.
Alex Beattie shares a bloodied up snap on Instagram after his hair transplant procedure [KSL Hair]
He said that men shouldn’t be ashamed of having the operation to improve their self-esteem.
“Women have their lips done, faces lifted or boobs done and this now is the new thing for men — and I don’t think there should be any shame about it,” he said.
Gareth is currently dating Coronation Street actress Faye Brooks after meeting in 2012 when they were both in Legally Blonde The Musical.
Faye recently said that she would love to start a family with the singer.
“I do get broody,” she confessed. “I would like kids by the time I’m 35, but when the time is right, the time is right.
“Me and Gareth are focused on our careers right now. We have plenty of time, although I am actually 30 this year. Everybody has said to me that it was the best year of their life, so I’m going to relish it.”