No matter your skin type, an IPL should be safe to use. Those with very sensitive skin should start by using the lowest setting on their device to test the waters and ensure no irritation occurs. However, if you have a particular skin condition or are weary about using an IPL device, it is best to consult your doctor before using an IPL.
In terms of skin tones, IPL devices are safest for those with a light skin tone and darker, coarser hair. IPLs work by targeting the pigment in the hair, so there needs to be a substantial difference between your skin and hair colour. Those with a darker skin tone risk damage or discolouration if they use an IPL, so it is best avoided if you don't fit the recommended criteria.