Gel, wax or putty?

[cakedup]

Looking for a hair styling product for DS. He's just had the short, back and sides, and the top front bit is a bit longer. I normally wet it in the morning and slick it back and it spikes up a bit. which looks great. However he returns home with the force of gravity bestowing upon him a fringe, which just looks weird.

So, just doing my Tesco shop want to buy a hair product for him. Am confused and have option fatigue. Gel? Wet look or not? Wax? Putty? Stying? Strong hold? Texturising?

He has quite thick, straight stubborn hair if that makes a difference.