From Sunscreen to Serums: A Dermatologist’s Guide to Smarter Skincare
September is here, and at McKay Dermatology & MedSpa, that means one thing—Skincare September! We’re celebrating with our biggest skincare sale of the year, and it’s the perfect time to stock up on products that actually work.
But with so many options, how do you know which ones are right for you? Let’s break it down by category so you can understand what each product does for your skin—and why the science behind them matters.
1. Sunscreens: Your #1 Anti-Aging Essential
Sunscreen isn’t just about avoiding sunburn—it’s the most powerful tool we have to prevent premature aging and skin cancer. Here are some of our favorites, as well as what we love about them:
· ISDIN Eryfotona Actinica – Powered by zinc oxide and DNA repair enzymes, this sunscreen doesn’t just protect—it actually helps repair existing sun damage.
· ISDIN Eryfotona Ageless – Adds peptides and antioxidants to fight fine lines and wrinkles while shielding your skin.
· Alastin HydraTint Pro Mineral Sunscreen – A lightweight, tinted sunscreen that blends seamlessly and doubles as your daily makeup coverage.
Why it matters:
Daily SPF keeps collagen intact and prevents the brown spots, wrinkles, and sagging that show up years later.
Learn more about what to look for in a sunscreen in this post.
2. Hydration & Barrier Support
A healthy skin barrier is what keeps your skin plump, smooth, and glowing. When it’s compromised, you’ll notice dryness, redness, and irritation.
· ISDIN Hyaluronic Concentrate – Uses pure hyaluronic acid to attract and lock in moisture while peptides support firmness.
· ISDIN Hyaluronic Moisture Creams – Available for normal, oily, or sensitive skin types, so you can choose the formula that works best for you.
· Alastin HA Immerse Serum™ – Not only delivers hydration, but also stimulates your skin’s own hyaluronic acid production for longer-lasting results.
Why it matters:
Hydrated skin is resilient skin. Supporting your barrier helps your products work better and reduces sensitivity. Plus, who doesn’t love a dewy, radiant look?
3. Anti-Aging Powerhouses
This is where science really shines—products that actively renew and repair.
· Alastin Regenerating Skin Nectar – Clears out damaged collagen and elastin so your skin can rebuild fresh, healthy fibers. (Especially helpful after procedures.)
· Alastin A-Luminate Brightening Serum™ – Combines peptides and antioxidants to target stubborn pigmentation and restore radiance.
· ISDIN Retinal Advanced – Retinal (a potent form of vitamin A) helps reduce wrinkles, smooth texture, and even out skin tone.
· ISDIN Melatonik – A nighttime serum with melatonin, vitamin C, and bakuchiol (a gentler retinol alternative) that repairs skin overnight.
Why it matters:
These ingredients are backed by years of research and can literally change how your skin ages. For example, clinical results showed a 43% reduction in wrinkles after four weeks of use of ISDIN Retinal Advanced!
4. Instant Boosts & Correctors
Sometimes you want results today—and that’s where instant treatments come in.
· ISDIN Instant Flash – Tightens and brightens within minutes, giving your skin a refreshed, well-rested look
· ISDIN Si-Nails – Strengthens weak or brittle nails with a keratin-boosting formula.
· ISDIN Skin Drops – Customizable foundation drops that give natural coverage without clogging pores.
· Alastin Resurface Skin Polish – A gentle but effective exfoliator that uses biodegradable beads and AHAs to smooth texture and reveal brighter skin.
Why it matters:
These products are perfect before events or when your skin needs a quick pick-me-up.
5. Eye & Targeted Treatments
The delicate eye area needs special care—and so do other targeted concerns.
· ISDIN K-Ox Eyes – Infused with vitamin K oxide and hyaluronic acid, this eye cream helps reduce puffiness and dark circles.
· ISDIN Vital Eyes – A retinol-based eye cream that firms, smooths, and rejuvenates tired eyes.
· Alastin Restorative Eye Treatment – Improves skin around the eyes, including the eyelids, with peptides and nourishing botanicals.
Why it matters:
Eyes are often the first place we see aging. Targeted treatments help you look more rested and youthful.
6. Hair & Body Care
Healthy skin goes beyond your face — we love treating our hair, feet and other areas with just as much care.
· ISDIN Lambdapil Kit – Includes shampoo, lotion, and supplements to support healthy hair growth from the inside out.
· ISDIN Uradin Lotion – A fast-absorbing body lotion that hydrates deeply with urea, leaving skin soft and smooth.
· ISDIN Podos Foot Gel – Repairs cracked heels and restores comfort to dry, rough feet.
Why it matters:
Skin is your body’s largest organ. Caring for it everywhere ensures confidence from head to toe.
How to Layer Your Skincare Products
Now that you know what these products do, the next question is usually: “How do I use them all together?” The truth is, a smart routine doesn’t need to be complicated—you just want to make sure you’re layering products in the right order so they work their best.
A simple rule of thumb is to apply products from thinnest to thickest:
Cleanser → treatment serums → eye cream → moisturizer → sunscreen (in the morning).
Here are a few quick tips for your skincare routine:
· Morning vs. night: In the morning, focus on protection (antioxidants, hydration, SPF). At night, switch gears to repair (retinoids, growth factors, or brightening serums).
· Don’t overload your skin: More isn’t always better. Stick to a few key products that target your top concerns, rather than layering everything at once.
· Be mindful of combinations: Some actives—like retinoids and exfoliating acids—are best used on alternating nights to avoid irritation.
· Sunscreen is non-negotiable: Especially if you’re using retinoids, brightening products, or exfoliators. These make your skin more sensitive to the sun, so SPF is what protects all that progress.
And remember, our team is always happy to help you build a routine that fits your skin, your lifestyle, and your goals.
Because skincare is more than just moisturizer—it’s about choosing science-backed ingredients that protect, repair, and truly transform your skin. The right products can make a visible difference in your skin’s health and appearance, while also giving you a boost of confidence every time you look in the mirror.
And with Skincare September in full swing, now is the perfect time to invest in yourself: Enjoy 25% off all Alastin & ISDIN products this month only.
Call or stop by our office to stock up and let our experts guide you toward a personalized routine you’ll love.
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About McKay Dermatology and MedSpa
McKay Dermatology and Medspa is a premier destination in the Stuart, Florida for the latest and most advanced treatments in skin cancer removal, Mohs surgery, laser treatments, skincare, wrinkle relaxers, massage, and more — all designed to rejuvenate and revitalize your skin while preventing future damage. Their team loves serving patients from all over the Treasure Coast — Palm City, Stuart, Jensen Beach, Port St. Lucie. Their professional, warm, and friendly atmosphere ensures you’ll receive the best personal attention as they help you look and feel your best.