At-home IPL devices use a broad spectrum of light with lower power, making them suitable and safer for home use; professional laser hair removal, on the other hand, utilizes a single wavelength laser with higher power, delivering faster results but requiring professional handling. The drawbacks of professional laser hair removal include high costs, the need for appointments and travel to clinics, as well as potential side effects such as skin burns and pigmentation issues, necessitating professional management to mitigate risks.