The higher SPF formulas (above SPF30) will hold in your body heat which can be helpful in cold weather, but please be careful in warmer weather to make sure you can adequate cool yourself.
Intense sun conditions include:
- Low latitudes (near the equator)
- Higher altitudes
- Peak sun season: May, June and July in the Northern Hemisphere
- Intense time of the day 10am to 2pm
- Sun exposure after long periods with little sun exposure
On hot and humid days it is important to consider the need for your body to sweat and cool itself. Higher SPF formulas (and non breathable Matrix formulas) may inhibit heat transfer. It is important to remember this with younger children as they have not fully developed their ability to sweat. In such cases the lower SPF formula should actually provide better protection.
In special situations where you cannot apply the initial application of the sunscreen to cool and dry skin you may choose Sawyer's SPF 50 which is formulated to stick to moist skin (which is why it feels greasy) but you should take care and try to keep yourself as cool as possible. Areas of thin skin may need reapplications of the SPF 30 or even the special SPF 50 later in the day or after heaving rubbing or moisture exposure.
May 9, 2022
Outdoor Life: Do You Really Need a Water Filter for Backpacking and Mountain Hunting?
Depending on where you travel, you may want to pack bug spray, too. In places like Florida and North Carolina, summers get buggy, and you’ll be happy to have packed a spray on nights when you want to sit on the porch or dine outdoors.
As a veteran of the Iraq War, I found myself struggling with post-traumatic stress disorder from which greatly impacted my mental health. In 2016, I came across the film “Wild,” an adaptation of Cheryl Strayed’s memoir about healing by hiking the Pacific Crest Trail (PCT).
Sawyer Permethrin Premium Insect Repellent is used on clothing, not skin, and it provides long-lasting protection against ticks.