Michael Jacksons appearance changed significantly over the years, and there are several factors that contributed to this transformation. Here are some of the key points from the search results:

• Vitiligo: Jacksons autopsy confirmed that he had vitiligo, a skin condition that causes loss of pigmentation in patches of skin.

• Plastic surgery: Jackson underwent several plastic surgeries to alter the appearance of his face. He had a nose job, eye lifts, and cheek implants, among other procedures.

• Weight loss: Jackson lost weight due to his vitiligo, which altered the appearance of his face.

• Puberty: Jackson attributed some of the changes in the structure of his face to puberty.

• Hair style and stage lighting: Jackson also attributed some of the changes in his appearance to changes in his hair style and stage lighting.

• Forehead lift, cheekbone surgery, and altered lips: Surgeons speculated that Jackson had these procedures done, but Jackson denied these allegations.

• Mask wearing: Jackson wore a surgical mask during air travel as a precaution to keep himself healthy. Later, he transformed it into a fashion accessory and wore a silk mask in black with jewel tones.

Overall, it seems that a combination of factors contributed to Michael Jacksons changing appearance over the years. While he did undergo plastic surgery, he also had a skin condition and experienced weight loss that altered his appearance. Additionally, he attributed some of the changes to natural factors like puberty and changes in his hair style and stage lighting.