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Matches Made In Skincare Heaven

Matches Made In Skincare Heaven

by Mikayla Doyle in Blog: Everything Under the Sun
Give your skin a little extra love—two transformational products are better than one.

Love Matches:
The Glow Getters
Start the day with SPF protection and gorgeous glow-to-go.
+
Smooth, even skin tone and brighten while you get your beauty rest.
= Bright, Radiant Skin
The Power Couple 
Thoroughly cleanse skin day and night with this hydrating must-have
+
Match it with a soothing eye gel that targets dark circles, puffiness, and fine lines
= Smooth, Nourished Skin

More to Love - Explore our bundled perfect matches here.
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Does Sunscreen Expire? Everything You Need to Know

Does Sunscreen Expire? Everything You Need to Know

The Short Answer Yes, sunscreen absolutely expires, and using expired sunscreen is one of the most common sun protection mistakes people make without even realizing it. An expired sunscreen may look and feel almost identical to a fresh one, but its ability to protect your skin from UV radiation has significantly degraded. In other words: you think you're protected. You're not. How Long Does Sunscreen Last? The FDA requires all sunscreens to maintain their stated SPF for at least 3 years from the date of manufacture. Most sunscreens will have an expiration date printed on the packaging — either on the bottom of the tube, the crimped end of a bottle, or the back of the label. If there's no expiration date listed, the FDA recommends treating any sunscreen that's more than 3 years old as expired and replacing it. Here's what to look for: EXP or Best By date on the packaging A PAO symbol (an open jar icon with a number like "12M" or "24M") — this tells you how many months the product is good for after opening No date at all — assume a 3-year shelf life from purchase What Happens When Sunscreen Expires? Sunscreen works because of its active ingredients — either chemical filters (like avobenzone or octinoxate) or mineral filters (zinc oxide and titanium dioxide). Over time, these ingredients break down and lose their effectiveness. Here's what happens specifically: Chemical sunscreens degrade faster. The UV-absorbing molecules in chemical filters are inherently unstable — exposure to light, heat, and air accelerates their breakdown. An expired chemical sunscreen may have significantly lower SPF than what's printed on the label. Mineral sunscreens (zinc oxide and titanium dioxide) are more stable and tend to hold up better over time — but the formulation around them (emulsifiers, stabilizers, moisturizing agents) can still degrade, affecting texture, application, and ultimately how well the product adheres to and protects your skin. The bottom line: expired sunscreen of any kind cannot be trusted to deliver the SPF protection it claims. Signs Your Sunscreen Has Expired (Even Before the Date) Sometimes sunscreen goes bad before its printed expiration date — especially if it's been stored improperly. Here's what to watch for: Separation — the formula has split into layers or looks watery Texture change — it feels grittier, clumpier, or thinner than usual Color change — yellowing or darkening of a formula that used to be white or clear Smell change — an off, rancid, or chemical odor Consistency issues — it's harder to spread or doesn't absorb the way it used to Any of these signs? Toss it — regardless of the expiration date. What Causes Sunscreen to Expire Faster? How you store your sunscreen has a huge impact on how long it stays effective. The biggest culprits for premature expiration: 🌡️ Heat — leaving sunscreen in a hot car, on a beach towel in direct sun, or in a warm bathroom accelerates ingredient breakdown significantly. Sunscreen should ideally be stored at room temperature, away from direct heat. ☀️ Sun exposure — ironic but true: leaving your sunscreen bottle sitting in the sun while you're at the beach can degrade the formula faster. 💧 Water contamination — getting water into the bottle (from wet hands, for example) introduces bacteria and can compromise the formula. 🔓 Leaving the cap off — exposure to air oxidizes both chemical and mineral filters over time. Pro tip: Store your sunscreen in a cool, shaded bag or a cooler at the beach, and always close the cap tightly after use. Can You Use Expired Sunscreen in an Emergency? We get it — you're at the beach, it's blazing hot, and the only sunscreen you have is three years old. Here's our honest take: Expired sunscreen is better than nothing — but it is not reliable protection. You should not count on it to deliver its stated SPF, and you should reapply more frequently than usual if you use it. But the real answer is: plan ahead and replace it. Sunscreen is not a product worth skimping on. Skin cancer is the most common cancer in the United States, and expired SPF won't give you the protection you need. How to Know When to Replace Your Sunscreen A few practical guidelines: Replace every season. If you open a new sunscreen at the start of summer and use it regularly, it should last the season — then replace it next year. Write the date on the bottle. When you open a new sunscreen, write the date on the bottom with a marker. That way you always know how long it's been open. Check before every trip. Before a beach vacation or outdoor event, check the expiration date on every sunscreen you're packing. Does Mineral Sunscreen Last Longer Than Chemical? Generally, yes — mineral sunscreens with zinc oxide and titanium dioxide as active ingredients are more photostable than chemical sunscreens. The mineral filters themselves don't break down as quickly under UV exposure. However, this doesn't mean mineral sunscreen lasts forever. The base formulation — the emollients, stabilizers, and other ingredients that make the product spreadable and skin-friendly — will still degrade over time. At MDSolarSciences, all of our mineral formulas are designed to be as stable as possible — but we still recommend replacing them before the expiration date and storing them properly to get the most out of every bottle. The MDSolarSciences Lineup — Fresh, Effective, and Worth Replacing If your current sunscreen is looking (or smelling) a little questionable, this is your sign to refresh your SPF collection. Our full lineup of dermatologist-developed, broad spectrum SPF formulas is designed to protect, feel luxurious, and actually make you want to apply — and reapply — every single day. For your face: Mineral Crème SPF 50 — lightweight, sensitive skin-friendly, reef safe mineral SPF for daily wear Mineral Tinted Crème SPF 30 — your tinted SPF moisturizer that replaces your morning routine BB Crème SPF 50 — buildable coverage, antioxidant-rich, broad spectrum SPF 50 For your body: Quick Dry Body Spray SPF 40 — non-aerosol spray for fast, mess-free full-body coverage Mineral Crème SPF 50 — lightweight, sensitive skin-friendly, reef safe mineral SPF for daily wear For the kids: Mineral KidCrème SPF 50 — gentle, hypoallergenic, reef safe SPF for babies 6 months and up Mineral KidStick SPF 40 — one-swipe application, no mess, no meltdown KidSpray SPF 40 — non-aerosol kids spray for quick full-body coverage All products are dermatologist-developed, cruelty free, and formulated to maintain stability — but like all sunscreens, they have a shelf life. Replace them when they expire. Your skin is worth it. The Bottom Line Sunscreen expires — and using an expired formula means you're not getting the protection you think you are. Check the expiration date before every use, store your sunscreen properly, and replace it every season. It's one of the simplest things you can do for your long-term skin health. 👉 Shop fresh, dermatologist-developed SPF at mdsolarsciences.com

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How Often Should You Reapply Sunscreen? A Dermatologist's Guide to Getting It Right

How Often Should You Reapply Sunscreen? A Dermatologist's Guide to Getting It Right

The Short Answer You should reapply sunscreen every 80 minutes when you're outdoors, swimming, or sweating — and every 2 hours during general outdoor activity. If you're sitting inside by a window or going about your day indoors, reapplying once or twice is still a good idea, especially if you're near natural light for extended periods. But as with most things in skincare, the details matter. Let's break it down. Why Does Sunscreen Wear Off? Sunscreen — whether mineral or chemical — doesn't last forever on your skin. Here's why: UV exposure breaks it down. Chemical sunscreen filters absorb UV radiation and convert it to heat, which gradually depletes them. Even mineral sunscreens (zinc oxide and titanium dioxide) can be physically disrupted by sweat, water, and touch. Sweat and water wash it off. Even water-resistant formulas have limits. "Water resistant up to 80 minutes" means the SPF holds for 80 minutes of water exposure — after that, protection drops significantly. Touching your face removes it. Every time you wipe your face, apply makeup, or touch your skin, you're removing a layer of your SPF. It doesn't absorb into the skin and stay. Unlike moisturizers, sunscreen works on the surface — which means it needs to be refreshed. The Reapplication Rules by Situation ☀️ Outdoors — General Activity Every 2 hours, minimum. Set a timer if you need to. UV radiation is cumulative, and even on a partly cloudy day, up to 80% of UV rays reach your skin. 🌊 Swimming or Water Sports Every 80 minutes — even with water-resistant SPF. After toweling off, reapply immediately. Towel drying removes sunscreen just as effectively as water does. 🏃 Exercise or Heavy Sweating Every 80 minutes. Sweat dilutes and removes sunscreen quickly, especially around the hairline, forehead, and neck. 🚗 Driving or Sitting Near Windows Every 2 hours if you're exposed to sunlight through glass. UVA rays — the ones responsible for aging and long-term DNA damage — penetrate window glass. Your car window, your office window, your living room — all of it lets UVA through. 💻 Working Indoors If you're away from windows, reapplying once mid-day is sufficient. If you're near a window or sitting in direct indoor sunlight, treat it like outdoor exposure and reapply every 2 hours. 🌥️ Cloudy Days Don't skip reapplication. Clouds block visible light but not UV radiation. Up to 80% of UV rays pass through cloud cover — meaning you can burn and accumulate UV damage on overcast days just as on sunny ones. How Much Sunscreen Should You Reapply? Most people don't use enough — which means even if they reapply on time, they're not getting the full SPF protection listed on the bottle. For your face: About a nickel-sized amount (roughly ¼ teaspoon). For your body: About one ounce — a full shot glass worth — for complete coverage. Under-application is one of the most common reasons people feel like their sunscreen "isn't working." If you're applying too little, you're getting a fraction of the advertised SPF. Does Reapplying Over Makeup Work? Yes — with the right products. Reapplying liquid sunscreen over a full face of makeup isn't always practical, but there are options: Tinted SPF moisturizers — blend in over minimal makeup SPF sticks — easy to swipe over makeup without disturbing it At MDSolarSciences, our Mineral Tinted Crème SPF 30, our Mineral BB Crèmes and our Mineral Solar Sticks SOF 40 are lightweight enough to layer, making mid-day reapplication seamless even over skincare and light coverage. The Signs You Need to Reapply (Even If You Haven't Hit the 2-Hour Mark) You've been sweating heavily You've been in and out of water You've toweled off You've wiped your face You've applied powder or touched up your makeup Your skin feels warm or tight in the sun Any of these? Time to reapply. Common Reapplication Mistakes to Avoid ❌ Skipping reapplication because you applied a high SPF SPF 50 and SPF 100 still need to be reapplied. Higher SPF gives you more protection per application — it doesn't extend how long it lasts. ❌ Only reapplying to your face Your neck, ears, chest, hands, and the back of your neck are among the most commonly missed spots — and the most vulnerable to UV damage. Don't forget them. ❌ Waiting until you feel burned By the time your skin feels warm or starts to turn pink, UV damage has already occurred. Reapplication is preventive, not reactive. ❌ Skipping reapplication in winter UV radiation is year-round. UVA levels remain relatively constant throughout the year and can cause skin damage even in cold, grey weather. The Best Sunscreens for Easy Reapplication The best sunscreen is the one you'll actually reapply — which means it needs to feel good, look good, and fit into your real life. At MDSolarSciences, our formulas are designed to make reapplication something you actually want to do: Mineral Crème SPF 50 — lightweight, non-greasy, and gentle enough for sensitive skin. Reapplies beautifully over bare skin or minimal skincare. Mineral Tinted Crème SPF 30 — our most popular formula for daily wear. Blurs, hydrates, and protects in one step — easy to reapply mid-day. Quick Dry Body Spray SPF 40 — non-aerosol, broad spectrum spray for full-body coverage on the go. Dries fast, no rubbing required. Mineral KidStick SPF 40 — the easiest reapplication tool for kids. One swipe, no mess, no meltdown. KidSpray SPF 40 — non-aerosol kids spray for fast full-body reapplication at the pool or beach. All MDSolarSciences formulas are dermatologist-developed, clinically tested, and broad spectrum — so every reapplication counts. The Bottom Line Reapplying sunscreen isn't optional — it's the difference between protected skin and the illusion of protected skin. The rule is simple: every 80 minutes in water or heavy sweat, every 2 hours outdoors, and at least once mid-day if you're spending time near windows indoors. Set a reminder. Keep your SPF in your bag. Make reapplication a non-negotiable part of your routine. Your future skin will thank you. 👉 Shop MDSolarSciences broad spectrum SPF at mdsolarsciences.com

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MDSolarSciences Prime Day Shopping Guide

MDSolarSciences Prime Day Shopping Guide

💄 Lip Care with SPF: Up to 25% Off Your lips need sun protection too — and our Hydrating Sheer Lip Balm SPF 30 line makes it effortless. Lightweight, non-sticky, and available in seven beautiful shades, these lip balms deliver broad spectrum mineral SPF in the most wearable format imaginable. Think of them as your new everyday lip color — with built-in sun protection. All 7 shades are on sale now: Product Deal Discount Tinted Lip Balm — Spice ⭐ Best Deal 25% off Tinted Lip Balm — Dream ⭐ Best Deal 25% off Tinted Lip Balm — Crystal ⭐ Best Deal 25% off Tinted Lip Balm — Shimmer ⭐ Best Deal 25% off Tinted Lip Balm — Bare ⭐ Best Deal 25% off Tinted Lip Balm — Ruby ⭐ Best Deal 25% off Tinted Lip Balm — Blush ⭐ Best Deal 25% off Perfect for: beauty lovers, everyday wear, anyone who wants SPF without thinking about it. ✨ Face SPF & Skincare — Up to 30% Off Mineral Tinted Crème SPF 30 — 25% Off ⭐  Our cult-favorite tinted mineral sunscreen that does it all. Lightweight, buildable coverage with broad spectrum SPF 30 — this is the tinted SPF moisturizer beauty editors reach for every morning. No white cast, no heavy finish. Just glowing, protected skin. Best for: skincare minimalists, millennial women, daily SPF routines, sensitive skin Tint + Tone SPF 50 — 30% Off ⭐  Our most generous Prime Day discount goes to the Tint + Tone SPF 50 — a sheer, luminous formula that blurs and perfects while delivering broad spectrum SPF 50 protection. If you love lightweight coverage with a natural finish, this is your new holy grail. Best for: natural beauty lovers, minimalist makeup, everyday glow Mineral Crème SPF 50 1.7 oz — 20% Off ⭐  The gold standard in mineral sunscreen for sensitive skin. Our Mineral Crème SPF 50 is hypoallergenic, fragrance-free, reef-safe, and dermatologist-developed for even the most reactive skin types. Rosacea-prone? Acne-prone? This is the one. Best for: sensitive skin, rosacea, acne-prone skin, daily SPF Advanced Hydration Crème 1.7 oz — 30% Off ⭐  A clinical-grade moisturizer with peptides and ceramides designed to restore, hydrate, and repair the skin barrier. Pair it with your SPF for the ultimate AM/PM routine — protect by day, restore by night. Best for: dry skin, anti-aging routines, barrier repair, pairing with SPF Revitalizing Eye Gel — 25% Off ⭐  Bright eyes start here. Our Revitalizing Eye Gel is formulated to reduce the appearance of puffiness, dark circles, and fine lines around the delicate eye area. A must-have addition to any morning skincare routine. Best for: women 35+, anti-aging focused routines, morning skincare Evening Retinol Serum — 25% Off ⭐  Retinol at night, SPF in the morning — this is what dermatologists actually do. Our Evening Retinol Serum works overnight to renew skin texture, reduce the appearance of fine lines, and even skin tone. Pair with your morning SPF for the most powerful anti-aging duo in your routine. Best for: anti-aging, texture, hyperpigmentation, skincare enthusiasts 30+ Wash Away Cleanser 5 oz — 20% Off ⭐ A gentle yet effective daily cleanser that preps your skin for the rest of your routine without stripping its natural moisture barrier. Clean, protect, glow — that's it. Best for: skincare minimalists, clean routine lovers, all skin types 🌊 Body SPF — 20% Off Quick Dry Body Spray SPF 40 — 20% Off ⭐  Full-body sun protection that actually keeps up with your life. Our Quick Dry Body Spray SPF 40 is a non-aerosol, broad spectrum spray that dries fast, applies evenly, and goes wherever you go. Beach day, pool day, morning run — this is the body SPF you'll actually remember to use. Best for: outdoor lifestyle, beach and pool days, active creators, travel 👶 Kids SPF — Up to 20% Off Protecting little ones from the sun starts with the right formula — and ours was developed by dermatologists specifically for babies and kids 6 months and older. Reef safe, fragrance free, hypoallergenic, and water resistant up to 80 minutes. Mineral KidCrème SPF 50 — 20% Off ⭐  Our kids mineral sunscreen SPF 50 in a cream formula that glides on smoothly and absorbs beautifully. No white cast, no fragrance, no parabens. Zinc oxide-based and gentle enough for the most sensitive baby skin. Best for: babies 6 months+, sensitive skin, everyday protection, beach days KidSpray SPF 40 — 20% Off ⭐  The non-aerosol kids sunscreen spray that makes full-body coverage fast and fuss-free. No harsh propellants, no fighting a squirmy toddler. Just broad spectrum protection in a convenient mist. Best for: toddlers, outdoor play, pool and water days, on-the-go moms Mineral KidStick SPF 40 — 15% Off ⭐  The original kids sunscreen stick that parents swear by. Swipe it on in seconds — face, ears, nose — no mess, no residue, no meltdown. Compact enough for a diaper bag or backpack and gentle enough for daily use. Best for: on-the-go application, travel, school and camp, toddlers and kids 🛒 How to Shop the Prime Day Deals Head to Amazon and search MDSolarSciences All deals are marked as Best Deal and are live now Prime membership required for Prime Day pricing Deals are for a limited time only — stock up while you can! Our Top Picks for Every Skin Type Skin Type Best Pick Sensitive / Rosacea Mineral Crème SPF 50 Anti-Aging Evening Retinol Serum + Advanced Hydration Crème Minimalist Mineral Tinted Crème SPF 30 Glow-Getter Tint + Tone SPF 50 Mom & Kids KidStick + KidSpray + KidCrème Body SPF Quick Dry Body Spray SPF 40 Why MDSolarSciences? MDSolarSciences was founded on a mission: to make dermatologist-developed sun protection that people actually want to wear. Every formula is clinically tested and designed to feel like a luxury skincare product — not an afterthought. Skin cancer is the most common cancer in the United States — and the right SPF is one of the most powerful tools you have to protect yourself. Prime Day is the best time of the year to stock up. Shop all deals on Amazon now 👉 https://www.amazon.com/mdsolarsciences/s?k=mdsolarsciences

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