How to distinguish between medium dry skin and extra dry skin?

well, I'll tell you about several skin types, so that you can have a good contrast O(∩_∩)O~

First, dry skin;

Features: abnormal moisture and oil content of skin, dry, rough and inelastic, abnormal PH value of skin, tiny pores, thin face skin and easy to be sensitive. Facial skin is dull, dull, prone to rupture, dandruff and long spots, and difficult to put on makeup. However, the appearance is relatively clean, the Pitching is flat, and the skin ditch is in a straight line, shallow, chaotic and wide. Relaxed skin, prone to wrinkles and aging; Dry skin can be divided into two types: lack of oil and lack of water.

Second, neutral skin:

Features: moderate moisture and oil, moderate skin pH, smooth, tender and soft skin, full of elasticity, ruddy and shiny, fine pores, no flaws, neat lines and vertical and horizontal skin grooves, which is the most ideal and beautiful skin. Neutral skin mostly appears in children, usually in pre-development girls under 14 years old. Very few young people, especially after puberty, still maintain neutral skin. This kind of skin tends to be oily in summer and dry in winter.

Third, oily skin:

Features: exuberant oil secretion, obvious glossy T-spot, large pores, blackheads to the touch, hard and unsmooth cortex and deep dermatoglyphics; The appearance is dark yellow, the skin color is dark, the skin is alkaline, the elasticity is good, it is not easy to wrinkle and age, and it is not sensitive to external stimuli. Skin is easy to absorb ultraviolet rays, easy to turn black, easy to take off makeup, easy to produce acne and acne.

iv. mixed skin:

performance characteristics: one skin presents two or more appearances (both oily and dry skin characteristics). It is common that the T area of the face is prone to oil, while the rest is dry, and sometimes acne occurs. < P > 5. Sensitive skin: < P > Features: the skin is sensitive, the sebum film is thin, the skin's self-protection ability is weak, and the skin is prone to redness, swelling, pricking, itching, pain, peeling and dehydration.