Sunscreen is designed to protect skin from UV light and has been shown to reduce skin cancers. SPF measures protection from UVB rays, with higher SPF blocking more rays up to SPF 30. Sunscreen needs to be reapplied every few hours and applied liberally. Infants are best protected by avoidance of sun exposure, protective clothing, and physical blocker sunscreens. Shade, protective clothing, and hats can also protect from sun exposure. The document recommends different sunscreens for oily, normal, and dry skin types based on hydrating or oil-controlling ingredients.

1. Sunscreen
Dr. Nasra mohamed ahmed

2. sunscreen

3. • Sunscreen
• Sunscreens are topically applied agents
designed to protect the skin from the effects
of UV light
• Appropriate sunscreen use has been shown to
reduce the incidence of sun-induced skin
cancers (basal cell carcinoma, squamous cell
carcinoma, melanoma)

4. Types of sun screen

5. Sunscreen basics: What is SPF?
• SPF = sun protection factor
• It is calculated using the following equation:
• The amount of time it takes to produce erythema
on sun-protected skin
• ÷
– The time it takes to produce the same erythema
without sunscreen
• Theoretically, someone who normally burns after
10 minutes can stay outside for 2.5 hours before
burning (15 times longer) if wearing SPF 15

6. How to choose and apply sunscreen
– SPF only measures protection against sunburn from UVB;
doesn’t measure effects from UVA “broad spectrum”
sunscreens are best
– SPF 30 or greater is recommended SPF 30 blocks 97% of
the sun’s rays, so higher SPF products do not have much
additional benefit
• All sunscreens need to be reapplied every few hours
– Sunscreen must be applied in an adequate amount to
obtain the expected protection.
– The average adult should use 1 ounce (a shot glass size)
per full body application

7. What to look for in sunscreen

8. Sun protection and infants
• The sun puts young infants at risk for
overheating and sunburn
• The preferred method of sun protection for
young infants is sun avoidance (including
shade) and protective clothing
– Physical blocker-type sunscreens are a better
choice than chemical sunscreens Less irritating to the
sensitive skin of infants
– Less likely to be absorbed

9. Other ways to protect from the sun
–Avoid sun exposure during peak hours
Sun’s rays are strongest between 10 am and 4 pm
– Seek shade when your shadow is shorter than you
are
• Use photo protective clothing and hats
Measured by the ultraviolet protective factor (UPF)
Good: UPF 15-24
• Very good: UPF 25-39
• Excellent: UPF 40-50

10. Best sunscreen for oily skin
1. Color sciene PF 50
2.Skin ceuticles ultra facial defense spf 50
3.Neutrogena hydroboost water gel lotion spf50
4.Cetaphil pro absorbing moisturizer spf30
5.Avene high protection tinted compact spf50
6.Sunbum original face lotion spf50 (all skin
type)
7. Coola classic face organic sunscreen spf50

11. Best sun screen for normal skin
1. Black girl sunscreen spf30
2. Super goop mineral sheer screen spf30
3. Super goop unseen sunscreen

12. Best sunscreen for dry skin
1. la roche-posay anthelios uvmune 400
invisible fluid spf50
2. Isntree hyaluronic acid watery sun gel spf 50
3. Beauty of joseon relief sunscreen rice plus
probiotics

13. • Thanks for listening