Coconut oil it washes out easily.
Although solid at room temperature, it liquefies to the touch.
If you buy the gallon, you can:
1) heat the bottle in warm water and pour it into wide-mouthed jars for easy access;
2) pour it into smaller bottles and use it in conjunction with an oil warmer; or
3) if you are so inclined, pop it into hot water or the microwave before your treatment and it will be liquefied in no time!