Dry skin after jelqing

I have finally established jelqing techniqe that works best for me. My only problem is dry skin (head).
I use virgin olive oil for lube and Old Spice Whitewhater as a shower gel.

Do you think my dry skin is caused by lube or shower gel? What would you change?

Most likely that the shower gel is drying you up. Use just the olive oil and everything should get back to normal.

I use cocoa butter as a lube which keeps everything smooth.