Why can't retinol be used during the day? Precautions for using retinol

Different skin care products have different skin care ingredients, different effects, different usage methods and precautions. When using skin care products, you should pay attention that retinol is a very common skin care ingredient.

Photosensitive, easy to turn black.

It is not recommended to use during the day, but if you use it during the day, you must wear sunscreen. A side effect of retinols is that they thin the skin. This means that your skin will become sensitive and easily sunburned, so you must always wear sunscreen. Be careful when using skin care products containing retinol ingredients. When exposed to sunlight, retinol breaks down, resulting in increased skin sensitivity and fragility due to the weakening of the top layer of the skin. This degradation from the sun can have mild to extreme adverse reactions, from minor skin irritation to lesions and increased risk of melanoma. Even some types of artificial light that emit small amounts of ultraviolet light can increase the possibility of adverse reactions, so if you use retinol at night, you should avoid direct contact with fluorescent or halogen lights. No matter what light source you are surrounded by, just remember the basic rule: retinol is only suitable for working at night.

When you first start retinol skincare, be patient. It may take about 12 weeks to see changes. Even those who don't feel the signs of aging yet may want to start taking protective measures. Some recommendations are to start using retinol at around 25 years old. It is not necessary to overdo it with retinol serums. A pea-sized amount of serum is enough for the entire face. Retinol is best used at night. Going out in the sun right after applying retinol may affect the serum's effectiveness and may cause skin sensitivity. Remember to use facial sunscreen in the morning while using retinol.

A fat-soluble vitamin that is stable to heat, acid, and alkali, easily oxidized, and ultraviolet rays can promote its oxidative destruction. Vitamin A includes A1 and A2, A1 is retinol. Vitamin A2 is 3-dehydroretinol, and its physiological activity is 40% of vitamin A1. Vitamin A has many physiological functions, such as promoting growth and reproduction, maintaining normal secretion of bones, epithelial tissues, vision, and mucosal epithelium. Vitamin A and its analogs have the effect of preventing precancerous lesions. Common side effects of long-term application of retinol include redness and burning sensation of the skin, sensitivity to sunlight, dryness, and peeling.

First, it may cause peeling symptoms, but peeling symptoms usually only occur when using retinol for the first time, and will not occur again after using retinol. When peeling symptoms occur, just stop using it for about two or three days, and the symptoms will disappear automatically.

Second, it is sensitive to light. If you apply retinol during the day without a high enough level of sun protection, you will get sunburned in high altitude areas or places with strong ultraviolet rays. Because of this, it is generally recommended that you apply retinol at night. By the way, even if they are the same retinol products, there is a clear difference in the amount of retinol they contain. If you are sensitive to retinol, it is recommended to choose a category with a lower content.

1. L'Oreal Purple Iron Eye Cream L'Oreal Purple Iron is also a full-face eye cream. Its main active ingredients include botoxazole, 5 times high concentration of hyaluronic acid, snake venom protein oligopeptide Syn-Ake, vitamin E, golden ratio kombucha extract, etc. The ingredients are comparable to high-end luxury brands. Its main effects are intensively fading various facial fine lines, tightening facial skin, improving dark circles, etc., and authoritative experiments have proven that it can be effective in 4 weeks.

2. The main ingredient of Elixir Eye Cream is a high concentration of "pure retinol". Because of the effectiveness of the ingredient, it has a very obvious effect in reducing fine lines and wrinkles. Since I used it, I just can't put it down! I just hope it will never be out of stock. The texture is oily, and it is much more moisturized after being applied. After absorption, the moisturizing power is still sufficient. Its advantages are also disadvantages, that is, the concentration of retinol is too high, so girls with sensitive skin should pay attention.

3. Filorga Eye Cream has triple effects on improving the skin around the eyes, including removing wrinkles, dark circles and eye bags. This product contains the patented ingredient NCTF anti-aging youth factor, which can activate fibroblasts, restructure skin structure, increase skin firmness, effectively stimulate fibroblast activity, improve tissue firmness, and thus smooth wrinkles.

4. Shiseido Bio-Optimum Eye Cream is suitable for the area around the eyes or any place where fine lines appear. It can remove fine lines with visible effect. It can also take care of dry corners of the mouth. It contains rich vitamin A to solve the skin damage caused by ultraviolet rays. It locks in moisture and moisturizes for a long time! It is very suitable for fairies over 25 who need early anti-aging. The effect of fading dark circles can be seen in about two weeks. It is called "little iron".

5. Estee Lauder's Little Brown Bottle focuses on repairing function. When you open the bottle, you will see that it is translucent milky white. It smells light and has a gel texture. It looks a bit like jelly, but it is much thinner than jelly. It is quickly absorbed when applied to the skin around the eyes. During the application process, you can also feel the non-greasy feeling of the product from the touch. In addition, it contains more antioxidant ingredients. People who use their eyes for a long time and those who want to improve the dry lines and roughness caused by dry skin around the eyes are suitable for this Little Brown Bottle Eye Cream. It is also suitable for girls of all skin types. This one is definitely my true love and I will always repurchase it~

6. Kiehl's Avocado Eye Cream For fairies with dry skin around the eyes, it is best to choose a moisturizing milky eye cream, because this eye cream contains more oil and nutrients, which can quickly hydrate the area around the eyes. Oily skin can choose a gel texture or gel eye cream, which is refreshing, not easy to grow fat particles, and can also eliminate the problem of clogged pores. Fairies with neutral skin have the largest range of choices, as long as it is not too sticky or too refreshing. The ingredients in the eye cream are very important. As long as you know what ingredients correspond to what effects, you will definitely not choose the wrong eye cream. Of course, you also need to know what your eye problems are before you can prescribe the right medicine. Eye problems generally include dark circles, deep eye bags, eye swelling, etc. People who often have dark circles are because of irregular work and rest, and long-term sun exposure causes pigmentation. If you want to eliminate dark circles, you must choose an eye cream containing vitamin E and caffeine. Vitamin E can increase cell vitality, and caffeine can dilute melanin. Using an eye cream with these two ingredients will naturally reduce dark circles. For fairies with deep eye bags, you should choose products containing retinol and hyaluronic acid. These two ingredients can perfectly remove edema and tighten the skin.