ADHD management designed for how your brain actually works
Most ADHD apps are just glorified timers. Inflow is different - built by people with ADHD, backed by clinical psychologists, using CBT-inspired strategies. Learn to manage time blindness, burnout, overwhelm, and procrastination in 5-minute daily modules. Real tools, real change.
Welcome back, DERM Community.
You’ve heard it everywhere: “Reapply sunscreen every 2 hours.”
But let’s be honest: most of us aren’t sitting at our desks with a mirror and SPF bottle in hand.
So… do you really need to reapply every 2 hours indoors?
First, understand what we’re protecting against:
Sunlight has UVA, UVB, and visible light components:
UVB: causes sunburn, mostly blocked by glass.
UVA: penetrates glass and contributes to aging and pigmentation.
Visible light (especially blue light): can worsen melasma and hyperpigmentation in certain skin types.
So yes: some light exposure happens indoors, especially if you work near a window or under strong artificial light sources.
But here’s the nuance dermatologists emphasize
If you work away from windows and have standard indoor lighting, reapplication every 2 hours isn’t necessary.
If you sit near a window, drive frequently, or use devices for long hours, reapplication, or tinted mineral sunscreen containing iron oxides, can add protection against visible light and UVA.
Blue light from screens is weak compared to sunlight. However, people with melasma, post-inflammatory hyperpigmentation, or darker skin tones may still benefit from tinted SPF for the extra defense.
The dermatologist’s rule of thumb
Indoors all day, no direct sunlight?
→ Apply once in the morning, especially a broad-spectrum SPF 30+ with antioxidants.
Working near a window or stepping outside occasionally?
→ Reapply every 4–6 hours or use a powder or mist SPF for easy touch-ups.
Pro tip
Think of sunscreen as your daily insurance. Indoors, it’s less about frequency and more about consistency.
Applying every morning builds the habit (and baseline protection) that matters most.
The “every 2 hours” rule comes from outdoor UV exposure studies, not indoor settings.
Your reapplication schedule should reflect your actual environment, not just the label instructions.
Evidence-Based Applications
We have created this FREE Guide for you:
Looking for a Job?
We got you.
Here are some job postings you may find interesting:
Part-Time Nurse Practitioner or Physician Assistant - Consensus Health - West Orange, NJ - Apply here
Critical Care Nurse Practitioner, Internal Medicine-Pulmonary and Critical Care - UTMB Health - Galveston, TX - Apply here
Physician Assistant (PA) or Nurse Practitioner (NP) - $60,000 Sign On Bonus - WellNow Urgent Care - Lafayette, IN - Apply here
Physician Assistant (PA) or Nurse Practitioner (NP) - $60,000 Sign On Bonus - WellNow Urgent Care - Mishawaka, IN - Apply here
Residential Treatment Nurse - LVN - San Antonio Recovery Center - San Antonio, TX - Apply here
Want to Go Deeper?
Take one of our modules
Here are our featured courses for today!
Recommended Book of the Week
👋🏻 See you next Thursday, DERM community!
Reapplication isn’t a rigid two-hour countdown.
If your day is mostly spent indoors, consistency beats frequency. A single morning layer of a broad-spectrum SPF 30+, ideally tinted and antioxidant-rich, gives real-world protection for most indoor settings.
But if your workspace faces the sun, you’re driving, or managing pigmentation issues, think of sunscreen like hydration: a little top-up through the day keeps your skin barrier steady and protected.
Photoprotection is about balance, evidence, and sustainability.
So instead of stressing over the clock, focus on building the habit. That’s what truly keeps your skin safe over time.
Thank you for being here and we hope you learned a lot with us this week!
— The Derm for Primary Care Team
