Garnier Hair Style How Do I Use Garnier Fructis Style Surf Hair Texturising Gum On A Girl?

How do I use Garnier Fructis Style Surf Hair Texturising Gum on a girl? - garnier hair style

I sail a lot. In the summer we take Hawaii for 4 weeks with my friends and enjoy the sun and waves.
Thus, in winter I'm in England. How can I continue to surf and hair are observed? Well, I found Garnier Fructis Style Surf Hair texture of the gum, but how on earth can I use in my hair 2 cm below Sholder.
Please help me:)