Sun Protection
Skin cancer is the most common form of cancer in the US, yet it is often the most preventable! 
Knowledge is truly power when it comes to dealing with the sun. There is a lot of misinformation out there…read on to arm yourself with the facts!
SPF stands for sun protection factor. It tells us how well the sunscreen protects us against UVB rays, but has nothing to do with UVA radiation. Why does this matter? Read on…
UVB rays are referred to as “burning” rays. They are the rays that cause us to get sunburns…their effects can be immediate and harmful.
UVA rays are thought of as “aging” rays. These rays are responsible for most skin cancer, as well as signs of premature aging (like wrinkles and sun spots)! The scary fact about UVA rays is that they don’t necessarily produce any visible redness on the skin, so we don’t get any sign when they are bombarding us.
The FDA is working on a 4-star rating system to notify you of UVA protection. In the meantime, make sure the label says “UVA and UVB protection” or “broad-spectrum protection”. Read the active ingredients…the most common UVA protecting ingredients include: Avobenzone, Titanium Dioxide, Zinc Oxide, Oxybenzone. All Dermalogica Solar Defense products protect against UVA and UVB rays!
So…back to SPF. This number basically represents the amount of time you can stay outside without burning. Let’s say it takes about 30 minutes in the sun before you start to get red…an SPF2 protects you from 50% of the sun’s rays, so you can stay outside 2 times longer than normal without a burn (1 hour). SPF8 blocks 87.5% of UVB rays, and allows you to stay out for 4 hours before turning red.
SPF | % of UVB Rays Blocked |
2 | 50% |
8 | 87.5% |
15 | 93.3% |
30 | 97% |
50 | 98% |
Taking this into consideration, we see that SPF30 should not really be exceeded. There aren’t enough hours in the day to need such a high SPF! A high SPF doesn’t mean more protection…it just contains more chemicals (an can potentially product a chemical burn).
How does sunscreen work?
There are 2 types of sunscreen: chemical and physical
Chemical sunscreens work by absorbing UV radiation. This lowers the energy level and releases that energy as heat.
Physical sunscreens scatter or reflect the rays.
Chemical sunscreens are thought to be more effective, but some skin simply cannot tolerate these chemicals. For sensitive skin, choosing a pure physical sunscreen is ideal.
Zinc Oxide and Titanium Dioxide are the most recognized physical sunscreen ingredients.
The following depicts ingredients used in Dermalogica's Solar Defense line, and the UV rays they protect against:
Ingredient | UV Protection | Physical / Chemical |
Avobenzone | UVA | Chemical |
Oxybenzone | UVA & UVB | Chemical |
Homosalate | UVB | Chemical |
Octocyclene | UVA & UVB | Chemical |
Octinoxate | UVB | Chemical |
Octisalate | UVB | Chemical |
Zinc Oxide | UVA & UVB | Physical |
Titanium Dioxide | UVA & UVB | Physical |
Super Sensitive Faceblock SPF30 and Ultra Sensitive Faceblock SPF25 are Dermalogica's options for physical-only sunscreens.
Resource: SkinCancer.org
Safe Sun Tips
- Apply about 1 teaspoon of sunscreen on the face, and 1 ounce on the body
- The National Cancer Society recommends reapplying every 2 hours (more if you are swimming or exercising)
- Try to avoid the sun between 10 AM and 2 PM…that’s when UV radiation is strongest
- Be very liberal with sunscreen when you’re around snow or water…90% bounces back!
- Altitude also require extra protection…UV potency becomes 4% stronger with every 1,000-foot increase
- Don’t rely on SPF makeup alone…it’s great to use the extra protection, but we typically don’t apply enough to provide sufficient protection
- Wear SPF15 to SPF30 every day…UVA rays can penetrate glass, and a cloudy sky does not mean that you aren’t getting bombarded with UV rays
- A general rule of thumb is to keep small babies out of the sun until 6 months…after 6 months, sunscreen may be applied (it’s always recommended to speak with your physician first)
- If you want to wear a moisturizer along with your sunscreen, always apply sunscreen LAST
- Apply sunscreen 15 to 20 minutes before going outdoors
Dermalogica Options
Dermalogica’s Solar Defense line provides protection against UVA and UVB rays. They are formulated to be skin-type specific, which means they are sufficient to be your moisturizer AND sun protection! If you can’t do without your favorite moisturizer, just wear the sun protection on top.
Research shows that antioxidant vitamins are important when defending skin against aging and UV damage, so Dermalogica developed their exclusive UV Smart Booster Technology. This is a customized microcapsule that safeguards antioxidant vitamins C and E. The capsule bursts open upon contact with UV rays, releasing the vitamins for maximum free radical protection.
Name | Physical | Chemical | Description |
X | X | Ultra sheer and weightless for oily skin-provides a "matte" look | |
X |
| A gentle and soothing sunscreen for sensitive skin | |
X | X | A very nourishing sunscreen for aging skin | |
X |
| A softly tinted sunscreen for sensitive skin | |
| X | Mix it with your favorite moisturizer to give it an SPF17 | |
| X | An intensely nourishing body protector | |
| X | A water-resistant spray for quick, easy application | |
| X | Convenient wipes for the face and body | |
| X | A sunscreen stick for the lips, nose and ears | |
|
| A cooling, healing treatment to repair UV damage |
Watch a video about Dermalogica's sun protection line: