Burns and Scarring Using a laser that is too intense for a darker skin type can result in burns because the melanin in the skin absorbs too much energy. This can lead to painful burns and, eventually, scarring. 2. Hyperpigmentation or Hypopigmentation Incorrect laser settings can alter skin pigmentation, leading to hyperpigmentation (dark spots) or hypopigmentation (light spots), particularly in people with darker skin tones. These pigment changes can be temporary or permanent. 3. Ineffective Treatment If a laser with too low energy is used on a lighter skin type, it may not effectively target the hair follicles or pigment, leading to ineffective treatment results. 4. Increased Risk of Adverse Reactions Using the wrong laser type can increase the likelihood of adverse reactions, including redness, swelling, blistering, and infection, especially if the skin's surface is compromised.