How often should I switch my razor blade to ensure optimal shaving results? Is there a scientifically backed guideline or should it be based on personal experience? What factors should I take into account when evaluating the longevity of a razor blade, such as hair type, frequency of use, and skin sensitivity? If I notice irritation or a less effective shave, does that signify it’s time for a change? Are there visible signs that a blade has dulled, or is it more of a subjective feeling during the shave? Moreover, could the type of razor I use influence the rate at which the blade should be replaced? These nuances leave me pondering: is there a general consensus among grooming aficionados regarding the ideal duration between blade replacements? Ultimately, how can I strike that delicate balance between maintaining a close, comfortable shave and avoiding unnecessary waste? What insights might others have from their own grooming journeys?