Tianqidan used half of it. Can it be used in winter?

Tianqidan is half used and can be used in winter.

Generally, the shelf life of skin care products is three years without unpacking. It is recommended that the unpacked products be used within one year to one and a half years. Tianqidan has a very strong moisturizing effect and a high moisturizing degree. It may feel greasy when used in summer when the skin is seriously oily, depending on the skin quality.