Sun damage and age spots

Sun damage and age spots come with their own vocabulary, and the pages that explain them are not always plain. This page lists the questions for readers in Saline, Michigan, each reduced to a short answer.
The description to measure against
www.harvardhealth.org describes age spots as flat brown, black, or gray spots that often appear on areas exposed to the sun, like the face, hands, and shoulders. It also says that exposure to sunlight over the years can lead to age spots and uneven pigmentation.
Questions in order of length
- Is cryosurgery used on age spots?
- Can IPL remove sun spots?
- How do undereye bags form?
- What causes brown age spots?
- What can fade age spots at home?
- Does retinol help with sun damage?
- Which moisturizers help aging skin?
- Can wrinkles from sun damage be reversed?
- How do dermatologists treat sun-damaged skin?
Related reading on skin color changes
Dark patches are not always age spots. MedlinePlus on abnormally dark or light skin covers the wider range of color changes. For one common cause of dark patches, aad.org publishes pages on melasma diagnosis and treatment, melasma self-care and how to make melasma less noticeable.
The point readers miss
A spot that fits the description above is still only a description. Read the full answer for your question, and take anything you cannot match to the clinician who would examine it.