An An Jin Chun's products will not cause the skin to get darker and darker after use. An An Jin Chun's skin care products are usually designed for skin problems, such as dullness, dryness and wrinkles. They can help improve skin tone and make skin brighter, smoother and more elastic.

However, some people may temporarily turn black when using skin care products, which may be due to the following reasons:

1. Excessive massage: When using skin care products, if the skin is excessively massaged, tiny wounds and frictions may appear on the skin surface, thus promoting the formation and deposition of melanin.

2. Allergy to ingredients: Some people may have allergic reactions to certain ingredients, such as spices and preservatives, which may make the skin dull.

3. Ultraviolet radiation: If there is no sun protection after using skin care products, the skin may become dull due to ultraviolet radiation.

If you find that your skin is getting darker and darker after using the products of An Jin Chun, it is recommended to stop using them and consult a professional doctor or dermatologist. At the same time, pay attention to avoid excessive massage on the skin, ensure that the ingredients of the products used are suitable for your skin, and always pay attention to sun protection.