Lu Jiang told the teacher to see the Hong Kong Wine & Spirits Fair (two)
[UVC bands]
[UVA] UVA, UVB and UVC can all damage collagen fibers and, therefore, can you use petroleum jelly as lube accelerate aging of the skin. Both UVA and UVB destroy vitamin A in skin, which may cause further damage. UVA can contribute to skin cancer via indirect DNA damage ( free radicals and reactive oxygen species). UVA does not damage DNA directly like UVB and UVC, but it can generate highly reactive chemical intermediates, such as hydroxyl and oxygen radicals, which in turn can damage DNA. UVA penetrates deeply, but it does not cause sunburn or reddening of the skin (erythema).
[UVB] UVA, UVB and UVC can all damage collagen fibers and, therefore, accelerate aging of the skin. UVB causes some damage to collagen, but at a very much slower rate than UVA. Both UVA and UVB destroy vitamin A in skin, which may cause further damage. UVB light can cause direct DNA damage. This mutation can you use petroleum jelly as lube can result in cancerous growths.
As a defense against UV radiation, the amount of the brown pigment melanin in the skin increases when exposed to moderate can you use petroleum jelly as lube (depending on skin type) levels of radiation; this is commonly known as a sun tan The purpose of melanin is to absorb UV radiation. and dissipate the energy as harmless heat, blocking the UV from damaging skin tissue. UVA gives a quick tan that lasts for days by oxidizing melanin that was already present, and triggers the release of the melanin from melanocytes. UVB yields a tan that takes roughly 2 days to develop, because it stimulates the body to produce more melanin.
Mexoryl XL --------- Drometrizole trisiloxane Tinosorb S --------- (Bemotrizinol) Bis-ethylhexyloxyphenol methoxyphenyl triazine Tinosorb M --------- (Bisoctrizole) Methylene bis-benzotriazolyl tetramethylbutylphenol
Tinosorb OMC ------- (Octinoxate; Octyl methoxycinnamate) 2-Ethylhexyl methoxycinnamate, octyl methoxycinnamate directly behind OMC expressed Ensulizole can you use petroleum jelly as lube ---------- 2-Phenylbenzimidazole-5-sulfonic acid Enzacamene --- ------ 4-Methylbenzylidene camphor Homosalate ----------- can you use petroleum jelly as lube Homomenthyl can you use petroleum jelly as lube salicylate
Meradimate ----------- can you use petroleum jelly as lube Menthyl 2-aminobenzoate, menthyl anthranilate Octisalate ------- Octyl salicylate2-ethylhexyl salicylate Octocrylene -------- 2-Ethylhexyl-2-cyano-3 , 3 diphenylacrylate abbreviation OCTO Oxybenzone ------------- Benzophenone-3 abbreviation OXY Padimate-O ------------- can you use petroleum jelly as lube Octyl dimethyl PABA Triethanolamine can you use petroleum jelly as lube salicylate ----- ------- Trolamine salicylate Neo Heliopan AP -------- Disodium phenyl dibenzimidazole tetrasulfonate Uvinul A Plus --------- Diethylamino hydroxybenzoylhexyl benzoate can you use petroleum jelly as lube Uvinul T 150 -------- --Ethylhexyl can you use petroleum jelly as lube triazone
Aminobenzoic acid 15% Cinoxate 3% Dioxybenzone 3% Homosalate 15% Menthyl anthranilate 5% Octocrylene 10% Octyl salicylate 5% Oxybenzone (= benzophenone-3) can you use petroleum jelly as lube 6% Padimate O 8% Phenylbenzimidazole sulfonic acid 4% Sulisobenzone 10% Trolamine salicylate 12%
Benzophenone-3 (oxybenzone) 270-350nm Benzophenone-4 260-375nm Dioxybenzone 250-375nm Mexory xl (Drometrizole Trisiloxane) 290-390nm Methyl anthranilate 260-380nm Homosalate 295-315nm Octocrylene 250-320nm Octyl methoxycinnamate can you use petroleum jelly as lube 290-315nm Octyl salicylate 280- 320nm
Titanium dioxide probably gives good protection, but does not completely cover the entire UV-A spectrum, as recent research suggests that zinc oxide is superior to titanium dioxide at wavelengths between 340 and 380 nm.
PA PFA PPD protection class PA + PFA2 ~ 4 PPD2 ~ 4 are mild protective can you use petroleum jelly as lube PA ++ PFA4 ~ 8 PPD4 ~ 6 is moderately protective PA +++ PFA greater than 8 PPD6 ~ 8 are highly protective of titanium dioxide: the absorption wavelength of 250-340nm
[Titanium dioxide (Titanium Dioxide)] Chemical Formula: TiO2 Molecular Weight: 79.88 comedogenic 0 0 Sage Advice irritating source of titanium dioxide are excellent physical UVB protectants, can also protect a part of the UVA.
Divided according to the size of the pigment titanium dioxide and ultrafine grade level. Pigment particle size is relatively large levels of ultraviolet radiation is mainly reflection. But this particle is used in sunscreens, its sun or ultraviolet light scattering effect is poor. At this time, it only has a tradition of covering the skin effect, but rather difficult due to the higher proportion of low and stable in the exclusion of the sunscreen can you use petroleum jelly as lube cosmetics such as sunscreen lotion and sunscreen or suntan oil in water. So now manufacturers have done little regard titania meticulous, called "ultrafine titanium dioxide." But this time, ultrafine titanium dioxide for UV absorption but does not play a role in a reflex action. And a relatively strong photocatalytic activity, which is irritating to the skin.
[Zinc oxide (Zinc Oxide)] Chemical Formula: ZnO Molecular weight: 81.408 comedogenic irritating source 1 0 Sage Advice 1 0 DERMAdoctor
Avobenzone many sunscreen products will use a wide range of such high intensity UVA-protecting ingredients. However, the problem is that if the constitution is not strong Avobenzone, then once by sunlight, it will break down and lose their effectiveness. The broad-spectrum sun protection technology has done is to maintain the stability of Avobenzone to break down without losing effectiveness. As long as it is stable, it will have a strong protective can you use petroleum jelly as lube effect. Avobenzone for spectrum UVA and UVB has long wavelength blocking effect. If not Avobenzone, you will not be so much protection. Unfortunately, when you are the sun, when the amount of sunlight is different. From 1,2 hours to 5 hours after the sun, you will lose the protection. This is because when Avobenzone exposed to sunlight, it is excited to break down, resulting in longer absorb UVA and UVB.
Avobenzone (trade names Parsol 1789, Eusolex 9020, Escalol 517 and others, INCI Butyl Methoxydibenzoylmethane) is an oil soluble ingredient used in sunscreen products to absorb
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