Sunscreen must be applied to the skin at a level of about 2 mg per square centimeter to achieve the sunscreen effect, and the wrong way to use it will also reduce its effect. Usually, most people still use sunscreen by rubbing and rubbing, but in order to make it reach a certain thickness on the skin, it is recommended to use pat and press. When it is difficult to judge whether the sunscreen product covers the skin evenly, it is very important to apply the second layer. In addition, we need to understand whether the sunscreen in our hands is physical sunscreen or chemical sunscreen, or a mixture of the two. The higher the proportion of chemical sunscreen in the sunscreen, the more important the effectiveness of anti-infiltration. During the trial, apply it to the most sensitive parts of the skin such as the inner side of the arm. If it feels tingling, it means that the ingredients have penetrated into the skin. If you are using a chemical sunscreen, you should delete it directly from the purchase list. You can also apply sunscreen to the skin, 15 minutes later, use a watering can to gently spray water, if round water droplets can form on the skin, it means that the sunscreen has formed a protective film, which can achieve anti-infiltration and anti-perspiration effects; but if After spraying water, it becomes cloudy and even goes with the water, which means that the loss cannot be prevented. It is better to use this sunscreen less frequently.
Q1: Greasy, heavy, and whitish are all the disadvantages of sunscreen?
A: Unlike other skin care products that always give people a pleasant experience, it is always difficult to avoid the heavy whitening feeling of sunscreen. What is the reason? In terms of physical sunscreen products, physical sunscreen powders of titanium dioxide and zinc oxide are dispersed in the oil liquid phase, mainly mineral oil or triglycerides, etc., which not only facilitates the dispersion of powders, but also has the effect of preventing loss. With oily emulsifier, it will produce a certain thick and greasy feeling; as for whitening, because the physical powder is white, for example, the reflective whiteness of titanium dioxide is about 73.2%, so there will be this problem.
At present, there are also nano-sized physical powders, and the whitening feeling is slightly weakened. As for chemical sunscreen products, due to the addition of a large amount of chemical sunscreen agents (mostly oil-soluble), when the formula is not added with volatile silicone or oil-phase emulsifiers, it will feel greasy and airtight. In addition, it is related to the amount of application, high-factor sunscreen, the thicker the application, the thicker and sticky it will naturally be.
Q2: Is there an inevitable connection between the texture of sunscreen and the sun protection factor?
A: The higher the sun protection factor, the more chemical sunscreen powder or physical powder added, and a heavy feeling will be felt when applied. Physical sunscreen mainly adds zinc oxide, titanium dioxide and other ingredients. As the SPF factor increases, it will appear a bit heavy. However, the sunscreen factor of general physical sunscreen does not exceed SPF30, and most products with high sunscreen factor are chemical sunscreen. At present, Japanese and Korean sunscreens can be used. Even when the sun protection factor is high, the texture is quite refreshing and will not burden the skin, such as SPF50+GILLA8 TEA TREE CICA EXTRA CALMING SUN SCREEN.
Q3: Sunscreen products stay on the surface of the skin, purely for safety reasons?
A: Whitening and anti-aging skin care products, we seek to penetrate into the bottom layer of the skin to be effective, but different from sunscreen products, whether it is physical sunscreen or chemical sunscreen ingredients, it is best to stay in the stratum corneum, otherwise as long as it penetrates the stratum corneum a little. There will be photosensitivity or contact allergies to the skin for a short period of time. If problems arise from long-term use, it may cause cell chromosome disease.
The current new sunscreen ingredients have some structures with larger molecular weights. Such ingredients can prevent sunscreen products from penetrating into the skin, but at the same time they will make the products sticky and airtight. The larger the molecular weight, the more serious it is. It is difficult to reach the ideal sun protection factor. Therefore, most of the current sunscreens use chemical sunscreens and physical sunscreen powders to ensure the balance of effectiveness and comfort.
Q4: Does the water-proof and anti-sweat properties have anything to do with the freshness of sunscreen?
A: Sunscreen products are used as a protective umbrella for the skin to resist ultraviolet rays, so its waterproof and sweat resistance is very important. Silicone and oil-soluble polymer adhesives are indeed waterproof and anti-sweat ingredients that have been heavily relied on in the past, but their effects are difficult to last, mainly because they cannot be firmly attached to the stratum corneum. Such traditional polymer adhesives can at best ease the loss. However, it is more difficult to achieve long-term waterproof and anti-sweat effects. Adding more of these ingredients will make it sticky and airtight. But to achieve real anti-infiltration, the molecular weight of the polymer glue is required to be large enough, but it can form an excellent anti-perspiration and anti-sebum film on the stratum corneum. This is an important issue for the combination of formulation technology and polymer raw materials.
Q5: Physical sunscreen products have a stronger sense of use than chemical sunscreen products, so are their waterproof and anti-shedding properties also more advantageous?
A: Physical or chemical sunscreens will rely on polymer waterproof film formers or silicone oils to achieve waterproof and anti-shedding effects. In detail, oil-soluble chemical sunscreens are easier to adhere to the stratum corneum than water-soluble (Mexoryl SXL, Benzylidene camphor sulfonic acid, Benzophenone-4) chemical sunscreens.
Q6: Spray sunscreen products are the most convenient to use and have the most comfortable texture?
A: In addition to lotion-like and cream-like sunscreen products, for the convenience of use, many people are willing to choose spray products, especially when they need to apply sunscreen to an area of their body. However, in order to allow the liquid to be sprayed smoothly, the spray-type packaging has a low viscosity. If you want to form a waterproof film, many products even add alcohol, but it will make the sunscreen penetrate into the skin, especially the spray-type products are mostly chemical Sunscreen, so there is a risk. In addition, this type of product is easy to cause uneven thickness. When you feel that your body has been sprayed very wet, the thickness is still insufficient.
Q7: Is it necessary to remove makeup with waterproof sunscreen products?
A: Anti-slip products with waterproof and anti-shedding characteristics generally add a large amount of waterproof polymer film-forming agent, and the larger the molecule, the better the anti-shedding effect. If you add more, it will be difficult to remove. If you add less, it will prevent loss. Relatively weaker. It is more difficult to remove anti-loss sunscreen products, using general polyol makeup remover and makeup remover gel, which is more difficult to clean at once. It is recommended to use the cleansing oil to gently massage for 2-3 minutes, and then wash it off with a cleanser to easily remove the sunscreen.
Q8: Can sunscreens with whitening and anti-aging effects really have several benefits?
A: Chemical sunscreens need to stay in the skin's stratum corneum to be effective, while whitening and anti-aging ingredients must penetrate into the skin to be effective. These two different ingredients are strongly added to the product. Generally speaking, the product still uses sunscreen ingredients. Mainly, supplemented by whitening and anti-aging ingredients; consumers do not need to bet on a bottle of products for the effect of promoting the all in one bottle, division of labor and care, the harvest will be better!
Q9: Does our skin not only need sun protection, but also pollution prevention?
A: We all know how terrible pollution is to the human body, but can such an important task be done with sunscreen products? There have been studies on the effects of air pollution on lung function, inflammation and aging. It was found that in addition to ultraviolet rays, environmental pollution factors are also the main cause of facial spots and melanin precipitation. Harmful pollution factors increase the body’s production of free radicals and make Skin cells are damaged, which produces excessive melanin, causing spots, uneven skin tone, and melanin precipitation. In response to these problems, some sunscreen products will use multiple anti-pollution whitening technologies, and at the same time have comprehensive effects such as anti-pollution, UV isolation, anti-oxidation, and whitening, to guard the fragile skin that has been exposed to pollution for a long time.
Q10: Sunscreen products will lose their effectiveness due to sun exposure, so do I really need to reapply sunscreen every two hours?
A: What needs to be understood is that there are indeed sunscreen ingredients that lose their sun protection effect due to sunlight, but the combination of sunscreen products with a variety of sunscreen agents, so it cannot be presumed that as long as the sunscreen products containing these sunscreen agents that will decline, the sunscreen power will be weakened problem. In addition, physical sunscreen powders such as titanium dioxide and zinc oxide are combined. First, pay attention to the pH value. Titanium dioxide is very stable in weak acid formulations, while zinc oxide is stable only in neutral to weak alkaline solutions. Add the two to the pH value. It is relatively stable above 6 and the physical sunscreen powder does not have the problem of weakening its efficacy due to sunlight.
The frequency of application depends on whether you are indoors or outdoors. The amount of application is enough when indoors, and you can apply it once at noon. Outdoors, in addition to choosing waterproof and sweat-resistant sunscreen products, pay attention to the large amount of flow. After sweating, use paper towels and absorbent paper to dry the sweat on the surface of the skin before reapplying.
Q11: The skin is prone to oxidation and dullness after sun exposure, and ultraviolet rays are the number one culprit of skin aging. When doing outdoor activities, how can I get more detailed sun protection?
A: Of course, you must put on a proper sunscreen lotion to protect your skin from ultraviolet rays, and you must also use physical shading methods, that is, wearing a hat, wearing long-sleeved sunscreen clothes, and an umbrella. Can be sprayed after sunDOWITH PINK VERA SOOTHING MIST.