Yes, the frequency of hair washing can impact the occurrence of split ends. Overwashing hair, especially with harsh shampoos, can strip away the natural oils that keep the hair shaft moisturized, leading to dryness and increased susceptibility to split ends. On the other hand, infrequent washing may result in the accumulation of oils and product residue, potentially contributing to scalp issues and indirectly affecting hair health. Finding a balance and using a sulfate-free, moisturizing shampoo can help maintain a healthy moisture level and reduce the risk of split ends.