Don't choose the wrong soap or hand lotion, and make sure you have activator!!! Without activator, you'll end up with goo instead of awesome slime :) We are sensing which mystery bottle has the best ingredients for our slime! Some mystery bottles have glue, glitter, beads, activator, or other mystery ingredients. Ronald is lucky to find activator, but can Karina find it eventually? Let's make awesome slime with mystery soap bottles! Vote now who did the better slime :)

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Watch our playlists:
BEST VIDEOS    • PANCAKE ART CHALLENGE!!!  
CHALLENGES    • PANCAKE ART CHALLENGE!!!  
ROUTINES    • Morning Routine / Sister vs Brother  
OUTFIT CHALLENGES    • Switching Clothes with my Brother!!!!  
SLIME    • DON'T PRESS THE WRONG BUTTON SLIME CH...  
GUMMY vs REAL    • GUMMY vs REAL  
MYSTERY WHEEL    • MYSTERY WHEEL OF PIZZA CHALLENGE!!!  
FOOD CHALLENGES    • PANCAKE ART CHALLENGE!!!  
BABY SISTER    • Choosing a Name for Our Baby Sister!  
FUNNY SKITS    • Sleepover GIRLS vs BOYS  
24 HOURS    • 24 HOURS OVERNIGHT IN THE KITCHEN!!!  
CHIBI OUR CAT    • We spent $1000 on Cat Toys!!!  

Welcome to SIS vs BRO! This is where Karina and Ronald join forces to challenge each other in countless fun videos! Challenges, gaming, and more!!! Be sure to SUBSCRIBE and we will see you in the next video!!!

#MakingSlime #SISvsBRO #SoapSlime