What is Bumkin? Bumkin is a refillable diaper cream container with a built-in applicator, designed to make applying diaper creams more efficient and sanitary. Applying diaper cream can be a messy challenge, often requiring two hands, and increasing the possibility of cross-contamination. The Bumkin applicator eliminates the need to utilize fingers or a second tool to apply creams, and allows for easy one-handed use, speeding up the overall application process and reducing the risk of contamination. Bumkin also works with a variety of creams and lotions, making it suitable for use with a range of different skin condition treatments. Bumkin is refillable and dishwasher-safe, allowing users to buy cream in bulk or make their own formulations, and refill the container as needed.