Wrinkles and Sagging (Premature Ageing)
Cigarette smoke contains harmful chemicals such as nicotine, carbon monoxide, arsenic, etc., which severely affects the health of body cells. The smoking reduces the oxygen carrying capacity of blood cells, which directly affects the growth and repairing of skin cells. Moreover, the harmful chemicals of smoking are responsible in reducing the level of collagens in the skin. Collagen provides strength, flexibility and resilience with the help of keratin. Over time, collagen begins to degrade, and the body cannot produce more collagen this result in wrinkle and sagging. The harmful chemicals present in the cigarette smoke enhance the process of collage degradation and result in wrinkle and sagging.   

Vitamin A Depletion
Skin plays an important role in our body. It keeps our body safe from foreign bodies that can harm the body organs. Therefore, it is essential that a person should take proper care of their skin. Vitamin A is an essential nutrient required for the growth and repairing of the skin. The deficiency of vitamin can result in skin disorders such as boils, acne and bumpy skin. Moreover, vitamin A is required to keep mucus membrane and skin moist to prevent against viral and bacterial infections. The cigarette smoke contains poisonous chemicals such as carbon monoxide, arsenic, cyanide, methanol, etc. The smoking decreases the level of beta carotene in the body which is required for the formation of vitamin A.  

Vitamin C Depletion
Vitamin C is an essential nutrient to maintain the health of skin. Vitamin C effectively helps in eliminating free radicals that induce wrinkles and sagging of skin. Moreover, vitamin C has a vital role in repairing of skin cells and production of collagen. The cigarette smoke contains free radicals and oxidants, which reduces the level of vitamin C. Moreover, the reduction of vitamin C affects the production of collagen and results in the occurrence of skin disorder. According to a study, it is concluded that the skin of smokers is tend to lose its moistness that results in wrinkles and slow repairing.

Dryness
The first defense mechanism of our body is skin. It restricts the foreign body to enter in the body that could cause various diseases and infections. Moreover, the skin health is important as it is the outer layer of the body which often requires growth and repair. However, smoking contains harmful chemicals such as nicotine, carbon monoxide, methanol, arsenic, etc. These harmful chemicals are diuretic in nature and reduce the moisture of skin and causes chronic dryness. This results in scaly, thin and dull-looking skin. Also, the deficit of adequate dryness increases the chances of skin disorders and various infections such as boils.

Skin Appearance
Usually, it is seen that the smokers have dull skin colors due to the absence of essential nutrients. The cigarette smoke contains nicotine and other harmful chemicals, which accumulate in the lungs and reduce the oxygen retention capacity. In the absence of essential nutrients and oxygen the skin color becomes dull. Moreover, the cigarette smoke also contains free radicals such as carbon monoxide, which reduces collagen and vitamins and affects the appearance of skin. The collagen and vitamins are essential to maintain the health of skin. In lack of these essential nutrients and proteins, the skin looses the moisture and becomes scaly and dull.