August 11, 2026 · Amanda McClellan
Do You Need a Serum If You Already Use a Moisturizer?
A serum and a moisturizer aren't competing for the same spot in your routine — they're doing two different jobs. Here's how they work together.
Think of your skincare routine like caring for a garden. 🌱
Your moisturizer helps create a comfortable, hydrated environment on the surface of your skin. It helps support the skin barrier, reduce moisture loss, and leave your skin feeling soft, smooth, and nourished.
But a serum has a different job.
Serums are built to be targeted
Serums are often lightweight formulas designed around particular skincare goals, with ingredients selected to complement the rest of your routine. That focus is what earns a serum its own place in the lineup: it's chosen for something specific you'd like to work on, rather than for everything at once.
That means you can choose a serum based on what your skin is asking for:
- Hydration
- Brightening
- The look of uneven skin tone
- The look of fine lines and other visible signs of aging
- Antioxidant support
- Texture and overall skin appearance
A serum isn't meant to replace your moisturizer
They're teammates. 🤝
Serum = targeted treatment.
Moisturizer = hydration and barrier support.
The serum helps deliver ingredients targeted toward your specific skincare goals, while your moisturizer helps hydrate the skin and support the barrier that helps keep that moisture in.
That's why layering them can be so effective:
Cleanse → Serum → Moisturizer → SPF (in the morning)
The right products, doing different jobs
Your skin doesn't necessarily need more products. It needs the right products doing different jobs.
That's exactly how we chose the Sapphire Cove routine — three steps, each with a purpose, and the key ingredients named for every one. Our Bakuchiol Face Serum is the targeted step, built on bakuchiol — a gentle retinol alternative — with hyaluronic acid and white tea. Our Hydrating Face Moisturizer is the layer that follows it.
So if you've ever wondered, "Do I really need a serum?", the answer may be this: if you have a specific skincare goal you're trying to address, a serum can be the targeted step your moisturizer simply wasn't designed to provide.
Your moisturizer isn't failing. Your serum isn't replacing it.
They're working together.