Finger joint folds especially deep may be too little subcutaneous fat, hand skin aging and other physiological factors, may also be caused by exposure to irritating chemicals, according to different causes of hand cream and massage, scrub exfoliation, laser and other physical therapy. 1. Too little subcutaneous fat: If the subcutaneous fat is too little, poor skin elasticity, collagen loss, will lead to deep joint folds, can be used diligently apply hand cream and massage to improve the method, help the folds of the skin moisturizing and flattening. 2. Hand skin aging: With the shrinkage of fat cells, skin moisture gradually reduced, will lead to hand skin wrinkles and aging phenomenon. Skin care products with scrub particles can be used to exfoliate the skin, remove the dead skin in the folds, make the skin delicate and smooth, and make the joint folds smoother. 3. Exposure to irritating chemicals: If the joint folds are exposed to certain chemicals, such as laundry detergent, soap, detergent and other alkaline substances, it is easy to absorb the moisture in the skin, resulting in sensitive and dry skin, thus aggravating the joint folds. This is where physical therapy such as laser and ultrasound can be used to help normalize the skin at the joints. If you find that the joint folds are particularly deep and do not improve, you should not diagnose the problem on your own, and it is recommended that you seek medical attention.