In order to avoid unnecessary drying out of skin, you should not use even the best face masks for more than once every week. Natural face masks are like doing exercises; you should be regular as applying facial mask or will not get benefits if you do them once in a blue moon or inconsistently.
If you are unable to manage a homemade facial mask session often, then also don not worry. The two prime times when it is absolutely necessary to make this effort are during change of season at the end of summer, when your skin is dry and dehydrated due to sun exposure and at end of winter when your skin feels flat and dingy.
After putting the mask, put the finishing touch by using a wet and warm flannel cloth for removing the mask. It acts as a gentle exfoliate and instantly leaves the skin looking brighter and much clearer looking.