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#Light blue face paint substitute skin#

Increase in pigmentation (eg, melasma, postinflammatory pigmentation) to determine whether the pigmentation is epidermal (pigmentation enhanced by Wood lamp examination) or dermal (pigmentation unchanged by Wood lamp examination).

#Light blue face paint substitute skin#

What conditions are diagnosed using a Wood lamp?Ī Wood lamp for skin examination may reveal: Items on the skin surface such as fabric, topical medications and soap residue can also fluoresce. Clothing lint often shines bright white.Ī positive result is reported if a pigmentary disorder is more noticeable when examined using the Wood lamp or if fluorescence is noted.įluorescence is a coloured glow seen when certain substances such as collagen and porphyrins absorb black light and emit it again at a longer wavelength in the visible spectrum.

Normal healthy skin is slightly blue but shows white spots where there is thickened skin, yellow where it is oily, and purple spots where it is dehydrated.

The examination is painless and safe.Ī Wood lamp is used to identify the extent of pigmented or depigmented patches and to detect fluorescence. The lamp is held about 10-30 cm away from the skin.

After waiting to adapt to the dark, the skin is examined with Wood lamp for a few seconds.

Room lights are turned off, and window shades are drawn, or black drape used to darken the surroundings completely.

The Wood lamp is turned on to warm up for about a minute.

Gentle facial skin cleansing may be required

Ideally, skin to be examined should not have been recently washed or had any makeup, deodorant or moisturising cream applied, as these can fluorescence causing a false positive result.

A variety phosphors with different peak emissionĮxamination using Wood lamp involves the following steps.

There are several models with varying properties. Fluorescent black light tubes have a dark blue filter coating on the tube, which filters out most visible light. Modern black light sources may be specially designed BLB fluorescent lamps, mercury vapour lamps, light-emitting diodes, or incandescent lamps. The lamp was invented in 1903 by a Baltimore physicist, Robert W. What is a Wood lamp?Ī traditional Wood lamp is a low-output mercury arc covered by a Wood filter (barium silicate and 9% nickel oxide) and emits wavelength 320–450 nm (peak 365 nm).

The lamp glows violet in a dark environment because it also emits some light in the violet part of the electromagnetic spectrum. Blacklight is invisible to the naked eye because it is in the ultraviolet spectrum, with a wavelength just shorter than the colour violet. May Contain: Titanium Dioxide CI 77891, Ultramarines CI 77007, Iron Oxides CI 77491,CI 77492, CI 77499, Chromium Oxide Greens CI 77288, Chromium Hydroxide Green CI 77289, Blue 1 Lake CI 42090, Black 2 CI 77266, Red 7 Lake CI 15850, Red 6 Lake CI 15850, Yellow 5 Lake CI 19140, Yellow 10 CI 47005, Aluminium Powder CI 77000, Bronze Powder CI 77400, Copper Powder CI 77400, Mica CI 77019.Wood lamp examination is a diagnostic test in which the skin or hair is examined while exposed to the black light emitted by Wood lamp. Talc, Glycerin, Aloe Barbadensis Leaf Extract, PEG-8, PEG-75, Cetearyl Alcohol, Persea Gratissima (Avocado) Oil, Theobroma Cacao (Cocoa) Butter, Lauryl Glucoside, Glyceryl Stearate, PEG-100 Stearate, Bis-PEG-15 Dimethicone/IPDI Copolymer, Butylene Glycol, Chamomilla Recutita (Matricaria) Flower Extract, Cymbopogon Schoenanthus (Lemongrass) Leaf/Stem extract, Panax Ginseng Root Extract, Cucumis Sativus (Cucumber) Fruit Extract, Symphytum Officinale (Comfrey) Leaf extract, Tocopheryl Acetate (Vitamin E), BHT, Tris ( Tetramethylhydroxypiperidinol) Citrate, Benzotriazolyl Dodecyl p-Cresol, Disodium EDTA, Triethanolamine, Methylisothiazolinone, Decylene Glycol, Calcium Carbonate, Fragrance (parfum), coumarin, Limonene.