This mod is the Fire Skull mask mod, what it adds is pretty much explained by the title 

NOTES:
Make sure you enable invincibility before using the mask or else you will burn to death!
I don't know were I got the inspiration for this mask design if someone know please tell me :P 

DISCLAIMERS 

The MaskAlwaysOn.cs is a modified version, I did not create it! 

Installation: 

Using OpenIV, replace "prop_beach_fire" of your choice by going to: 
x64i.rpf/levels/gta5/props/recreational/v_sports.rpf 
and importing my model. 

NOTE: YOU NEED TO HAVE SCRIPTHOOKV.NET INSTALLED (If you don't have that, get it here: https://www.gta5-mods.com/tools/scripthookv-net) 

Then drag the "maskalwayson.cs" into your "Grand Theft Auto V/Scripts" folder. 

How to use: 

Make your self invincible then just simply press 7 on the numpad! 

Credits: 
Mask Modeled & Rigged by me 

MaskAlwaysOn.cs by Pandassaurus, Proudnoob and f0rest.