There is no one "best" haircut for a 55-year-old woman, as the most flattering hairstyle will depend on factors such as face shape, hair texture, and personal style. However, there are many hairstyles that are popular and flattering for women over 50. Here are some options to consider:

• Short-to-medium length layered crops: This is a popular haircut for women in their 50s, as it can add volume and texture to the hair. Blonde highlights can also lend more youthfulness to the overall appearance.

• Bobs: Bobs are a versatile and timeless haircut that can work for women of all ages. Shoulder-length bobs, blunt bobs, and stacked bobs are all popular options for women over 50.

• Pixie cuts: Pixie cuts are a short and low-maintenance option that can be playful and youthful. They are especially popular for women over 50.

• Bangs: Bangs can be a great way to add interest and youthfulness to a haircut. Wispy bangs that reach the eyebrows or gentle side waves are popular options for women over 50.

• Layered cuts: Layered cuts can add volume and texture to the hair, which can be especially flattering for women with thinning hair. Feathered layers, shaggy lobs, and medium-length cuts with highlights are all popular options for women over 50.

Ultimately, the best haircut for a 55-year-old woman will depend on her individual features and preferences. It may be helpful to consult with a hairstylist to find a flattering and low-maintenance haircut that works for you.