How many layers does facial skin have?

Human skin is actually quite strong, because the environment in which humans live is often full of bacteria and viruses, and it is precisely because of the skin's resistance that humans are not harmed by them. However, skin problems are prone to occur in daily life, otherwise there would not be so many skin diseases appearing clinically. So, how many layers does human facial skin consist of?

1. The skin is composed of epidermis, dermis and subcutaneous tissue.

2. The epidermis is the outermost layer of the skin and can be divided into five layers from the outside to the inside, namely the stratum corneum, the stratum lucidum, the stratum granulosum, the stratum spinosum and the stratum basale.

3. Dermis, composed of fibers, matrix and cells. The dermal papilla close to the epidermis is called the papillary layer, also known as the superficial dermis; the layer below it is called the reticular layer, also known as the deep dermis.

4. Subcutaneous tissue is located below the dermis and is composed of loose connective tissue and fat lobules, and is closely adjacent to the fascia below. The thickness of subcutaneous tissue varies depending on age, gender, location and nutritional status. Subcutaneous tissue has the function of preventing heat dissipation, storing energy and resisting external mechanical shocks.

Additional information

The quality of skin depends mainly on whether the skin is healthy, and the health of the skin is reflected in the skin's alkali neutralization ability. The pH value of the skin of different people at different times often varies between 4.5-6.5, and some are beyond this range. If the skin pH value is outside of 5.0-5.6 for a long time, the skin's alkali neutralization ability will weaken, the skin quality will change, and eventually lead to skin aging and damage.

Therefore, only by choosing corresponding skin care products and keeping the skin's pH value between pH5.0-5.6 can the skin be in the best condition and truly achieve a more beautiful and healthier effect. Any skin care method, whether it is genetic beauty or nanotechnology, cannot violate this principle. It can be seen that the skin's alkali neutralization ability is the key to skin health.