The world is full of all kinds of life hacks. Some are really great while others ... not so much. It's hard to separate the wheat from the chaff, which is why YouTube beauty expert Ellko created her "Fail or Holy Grail" series where she tries out all sorts of potentially bizarre-sounding beauty tips to see if they actually work or not.
Coca-Cola is a substance that has seen a lot of alternative uses lately, such as cleaning grungy pennies or even your toilet/sink. Another seemingly weird use for it is the "Coca-Cola Rinse" for your hair, which supposedly gives fine, straight hair that wavy, textured look you get after a day at the beach. Ellko tries out and discovers, to her surprise and mine, that it actually works!