Bergamot oil is derived from the peel of the bergamot orange and is known for its refreshing and uplifting properties. In cosmetics, it is often used for its:

1. Antimicrobial properties: Bergamot oil has antimicrobial properties that can help to prevent the growth of bacteria and other microorganisms on the skin, making it useful for treating acne and other skin infections.
2. Aromatherapy: Bergamot oil has a refreshing and uplifting aroma that can help to improve mood and promote relaxation.
3. Anti-inflammatory properties: Bergamot oil has anti-inflammatory properties that can help to reduce redness, itching and irritation on the skin.
4. Analgesic properties: Bergamot oil has a cooling effect on the skin and can help to reduce pain and discomfort.
5. Astringent properties: Bergamot oil is a natural astringent, which means it can help to tighten and tone the skin, making it useful for reducing the appearance of pores.
6. Emulsifying properties: Bergamot oil is also used as an emulsifying agent in cosmetics. It can help to mix oil and water-based ingredients together to create a stable emulsion.
7. It is also used in hair care products, to help reduce dandruff and itchy scalp.
8. It is important to note that Bergamot oil is photosensitive, which means that it can cause skin irritation when exposed to UV light. It is recommended to avoid sun exposure after applying it to the skin, and to use it in low concentration or in formulations with sunscreen.