Our products created from wood are treated with two coats of food-grade mineral oil and a final top coat of Boos Block Cream before they reach the customer. Dependent upon several variables e.g. where you live, the temperature & humidity level in your home, exposure to direct sunlight, the wood may dry out at various rates. We always recommend that you re-apply the top coat using any reputable block cream product (Boos Block Cream, Howard Butcher Block Conditioner) every month. Our experience is that you shouldn't need to re-apply the food-grade mineral oil product when you follow a schedule of re-applying the top coat.