SmartLipo (Smart Liposuction) laser lipo can theoretically cause damage to hair follicles if the laser energy is delivered too superficially or too close to the skin surface where the follicles reside. The SmartLipo procedure uses a laser fiber to liquefy fat beneath the skin, and if the energy is not properly controlled or is applied too close to the dermis, there is a risk of thermal injury to structures in the skin, including hair follicles. However, when performed correctly by an experienced surgeon, the laser is typically targeted at the subcutaneous fat layer, minimizing the risk to hair follicles in the beard area. Men with beards can still undergo chin contouring with SmartLipo, but special care should be taken to avoid superficial laser application in areas with desired hair growth. Surgeons can adjust the depth and energy settings to protect the hair follicles. Alternative chin contouring options that do not use laser energy, such as traditional liposuction or non-invasive modalities (e.g., cryolipolysis), may also be considered if preservation of beard hair is a priority. If beard density and hair preservation are important, it is essential to communicate this to the treating surgeon so that technique adjustments can be made to minimize risk to the hair follicles. There are no specific guidelines or studies directly addressing beard hair loss after SmartLipo, but the risk is considered low with proper technique. If hair loss does occur, it is usually localized and may be temporary, depending on the extent of thermal injury. No relevant clinical guidelines or direct studies were found in the provided search results, so this answer is based on the known mechanism of action of SmartLipo and standard surgical principles.