Skin Care Flashcards
Routes of skin penetration
- Transfollicular
- Direct transdermal
- Via eccrine gland
Delivery is difficult due to _____________, which is effective due to ___________
- effective barrier
- intercellular lipids
Solubility parameter of SC
8
Penetration depends on
- polarity of active
- charge of active
- hydration of SC (more hydrophilic materials)
Facial toner is a
solution
Clay mask is a
suspension
Triclosan is an
antibacterial cleanser
Peel off masks are based on
polyvinyl alcohol
% range of emollients for creams/lotions
1%-80%
% range of surfactants for creams/lotions
1%-20%
% range of humectants in creams/lotions
1%-10%
Sorbitan esters are used for ____ emulsions
W/O
Polysorbates are used for ____ emulsions
O/W
Types of acties in acne preparations
- Benzoyl peroxide
- Salicylic acid
- Sulfur
what type of active is zinc oxide?
skin protectant
what type of active is benzocaine?
external analgesic
anti-perspirants are based on
aluminum salts
Hari growth is based on
minodixil
Loss on drying @ 105 degrees celsius provides info on
water and volatile solvents
Ash @ 800 degrees celsius allows you to
distinguish between inorganic and organic residue
UVA range
320-400 nm
UVB range
290-320 nm
UVC range
200-290 nm
which type of rays are responsible for tanning and chronic damage
UVA
