Answer: gel-húmedo.
Step-by-step explanation:
"Gel" is a masculine noun, so its adjective must match in gender: gel húmedo.
Translation:
I'm Alberta and I'm going to a party today. I use the wet razor for my legs and the wet gel for my hair. I wear nice clothes. I paint my nails red and with my nails already dry, I put on my shoes.
Spymore