A great alternative to baby oil.

To Make A 24oz Lava Drip Tumbler
1. Start with a 24oz Acrylic Tumbler
2. Add roughly 2.5 oz Mineral Oil to the tumbler
3. Rotate tumbler to coat inside with mineral oil. 
4. Shake well then add approximately 3oz Lava Drip to your tumbler. 

It's recommended that you turn your lava cup at lease two full turns a day or 5 turns every 2-3 days. The longer it sits without being turned, the longer it will take for the solution to blend back together.