U.V Sun Screen SPF 50+(75 gm) cream

UV Block cream   SPF 50+

sunburn

Is a burn of living tissue like the skin produced by Overexposure  to ultraviolet light

 

UV Block cream   SPF 50+

Symptoms

• Reddish skin hot to touch
• Peeling skin
• General fatigue
• Mild dizziness

 

UV Block cream   SPF 50+

• Excessive exposure to UV radiation may lead to non malignant skin tumors
• Every body who exposed to sun rays should use sunscreen cream, lotion, …………… etc
• Exposure to lesser amount of UV radiation produce suntan

 

UV Block cream   SPF 50+

• Moderate sun tanning without burning can prevent sunburn, as it increase production of melanin , photoprotectant pigment .
• Melanin is the natural defense against overexposure to UV light, as it transforms UV photons to harmless amount of heat without generation of free radicals.

 

sunscreens

• Products that absorb or reflect some of UV radiation to prevent sunburn .
• They are two types :
• Chemical……….absorb UV light
• Physical (inorganic)……reflect, scatter UV light

protection by sunscreen depend on :

• Skin type
• Amount applied
• frequency of reapplication
• Activities (swimming , playing ,…….)
• The amount of sunscreen absorbed

 

Water resistant vs waterproof

• Water resistant sunscreen which maintain its SPF over 40 min. of exposure to water
• Waterproof sunscreen which maintain its SPF over 80 min. of exposure to water

 

UV Block cream   SPF 50+

 

A good sunscreen should contains :

• more than one sunscreen agent
• both physical and chemical sun blocking agents
• water proof one

 

UV Block cream   SPF 50+

Contains   4  sunscreen agents

 

TIO2  (5.5 ww%)

• Physical blocker (UV A & UV B)
• Covering range : (280nm – 400 nm)
• Has high refractive index ,thus has strong UV blocking capability
• Resistant to discoloration under UV light .
• So tio2 has stability and ability to protect the skin from UV light

 

TIO2

Coated with silica to prevent free radical formation

Don’t degrade under UV light and also protect other ingredients from degradation

• Suitable for children
• FDA approved up to 25 ww %

 

Benzophenone-3 (3.5 ww %)

• Covering range: 290-360 nm
• Chemically absorb both UV B and UV A
• Strong sunscreen ingredient
• its structure is highly stable under sun light
• Prevent degradation of other ingredients .
• FDA approved below conc. of 0 ww %

 

Octyl methoxycinnamate (octinoxate) (7.0 ww %)

• Covering range :280-320 nm
• Chemically absorb UV B only
• Most widely used UV B blocking agent in the skin care industry
• Show some degradation upon exposure to UV light but it can be prevented by other agents .
• FDA approved up to 7.5 ww %

 

Octyl salicylate (4.0 ww %)

• covering range :295-315 nm
• Chemically absorb UV B only
• High safety profile
• Show some degradation but can be prevented by other agents .
• FDA approved up to 5.0 ww %

 

UV Block cream   SPF 50+

• Highly selected formula .
• Has 4 sun screen agents.
• Potent blocking cream against UV B and UV A.
• Waterproof sun block cream.
• Highly stable cream in day time.
• Well tolerated and physically accepted.

UV Block cream

Application

• Applied 30 min before exposing to sun and reapplied when necessary