As we reach the midpoint of summer, many of us are spending more time outdoors enjoying everything the season has to offer. At PUR med spa, we’re also seeing an increase in questions about sun protection — particularly the difference between chemical and physical sunscreen, and how often sunscreen really needs to be reapplied. With cumulative sun exposure being one of the leading causes of premature aging and skin damage, this is a conversation worth having.
Chemical vs. Physical Sunscreen: What’s the Difference?
Both chemical and physical sunscreens are effective when used correctly, but they function in distinct ways:
Chemical Sunscreens
- How they work: Absorb into the skin and convert UV rays into heat, which is then released from the body.
- Common ingredients: Avobenzone, oxybenzone, octocrylene, homosalate.
- Texture: Lightweight and cosmetically elegant, often invisible on the skin.
- Best suited for: Everyday use, under makeup, or when a sheer finish is preferred.
Physical (Mineral) Sunscreens
- How they work: Create a physical barrier on the skin that reflects and scatters UV rays.
- Common ingredients: Zinc oxide, titanium dioxide.
- Texture: May leave a white or tinted residue, though newer formulations are more refined.
- Best suited for: Sensitive skin, post-procedure skin, melasma or individuals looking for immediate protection upon application.
At PUR med spa, we often recommend mineral sunscreens following treatments such as microneedling, IPL, or laser procedures, as they are less likely to cause irritation and provide reliable protection for healing skin.
The Critical Importance of Reapplication
One of the most important—and frequently overlooked—aspects of sun protection is reapplication. Even the most effective sunscreen diminishes over time due to:
- Perspiration
- Swimming or towel drying
- Environmental exposure
- Natural breakdown of active ingredients
To maintain optimal protection, sunscreen should be reapplied every 2 hours, or immediately after water exposure or sweating. This is essential in preventing:
- UV-induced pigmentation and discoloration
- Accelerated aging and fine lines
- Breakdown of collagen and elastin
- Post-inflammatory hyperpigmentation (especially after treatments)Long-term risks such as skin cancer
For clients who wear makeup, we recommend using SPF setting sprays or mineral powder sunscreens throughout the day to ensure continued coverage without disrupting your routine.
Maintain and Protect Your Summer Glow
As summer progresses, it’s an ideal time to evaluate your skincare regimen, especially if you’ve undergone recent aesthetic treatments or are noticing early signs of sun damage. Our team at PUR med spa is here to support your skincare goals with:
- Professional-grade sunscreens suited to all skin types
- Targeted treatments for sun damage and pigmentation
- Personalized advice for maintaining healthy, radiant skin year-round
Invest in Prevention
Daily sun protection—and diligent reapplication—is one of the most important steps you can take to preserve your skin’s health, appearance, and integrity over time. Prevention is always more effective than correction.
Visit PUR med spa to learn more about the difference between chemical and physical sunscreens, receive expert product recommendations, and discover post-summer skin recovery treatments tailored to your needs!!
