- POWDER CAN BE SIMPLY CALLED THE COLLECTION OF DRY PARTICLES WHICH COULD BE FINE OR PRODUCED BY CRUSHING,GRINDING,OR DISINTEGRATING THE COARSE SOLID PARTICLES .
- WHEN THERAPEUTIC POWDERS ARE CONSIDERED ,PARTICLES SIZE DISTRIBUTION IS A CRITICAL FACTOR THAT GOVERNS THE PACKAGING ,FLOW & DRUG UNIFORMITY IN THE POWDER BLEND .
*COMPARISION OF POWDER WITH OTHER SUBSTANCE:
A PASTE OR GEL MIGHT BECOME A POWDER AFTER IT HAS BEEN THROUGHLY DRIED , BUT IT IS NOT CONSIDERED AS POWDER WHEN IT IS WET BECAUSE IT DOESN'T FLOW FREELY.
SUBSTANCES LIKE DRIED CLAY , ALTHOUGH DRY BULK SOLIDS COMPOSED OF VERY FINE PARTICLES , ARE NOT POWDERS UNLESS THEY ARE CRUSHED BECAUSE THEY HAVE TOO MUCH COHESION BETWEEN THE GRAINS , SO THEREFORE THEY DO NOT FLOW FREELY LIKE A POWDER.
A POWDER ON THE OTHER HAND IS A SOLID , NOT A LIQUID , BECAUSE IT MAY SUPPORT SHEAR STRESSES & THEREFORE MAY DISPLAY AN ANGLE OF REPOSE.
* WHY DO PEOPLE WEAR POWDER ON THEIR FACE?
IT'S BECAUSE THEY THINK IT WILL MAKE THEIR FACIAL SKIN LOOK FLAWLESS , CLEAN, FAIR (AS SHOWN IN ADVERTISEMENT.BUT NONE OF THE ABOVE MENTIONED PROBABLE REASONS ARE COMPLETELY CORRECT...
WEARING POWDER ON FACE WILL WORK ONLY IF A PRIMER FOUNDATION IS APPLIED & EVERYTHING IS EVENLY BLENDED NOT LEAVING ANY BLEMISHES SO THAT IT MATCHES PERFECTLY WITH THE SKIN TONE OF THE PERSON & EVEN THAT TOO WHEN THE POWDER IS ACTUALLY MEANT TO BE APPLIED ON FACIAL SKIN.
-AKSHITA SRIVASTAVA
