How to Choose the Right Moisturizer for Your Skin Type
Summary
A good moisturizer does more than make your skin feel comfortable — it helps maintain your skin barrier and can head off bigger issues down the road. The catch is that there’s no single formula that works everywhere and for everyone: a cream built for a humid summer can feel heavy and clog pores, while that same cream might be exactly what dry winter air calls for. The ingredients themselves fall into distinct categories, and understanding what each one actually does makes shopping for a moisturizer far less confusing.
I recently took a MasterClass called Skin Health, and moisturization was one of the first things covered — so consider this post my notes from that class. Here’s how to match a moisturizer to your skin type and climate and apply it the right way.
Table of Contents
Why Moisturizer Deserves a Place in Your Routine
Moisturizing isn’t just about comfort — it’s part of what keeps your skin barrier intact and functioning well over time. But the product that works has to fit two things at once: your skin type and the climate around you. A formula that’s too rich for your skin, or too light for the environment you’re in, won’t deliver the benefit you’re after, even if the ingredient list looks impressive.
Humectants, Emollients and Occlusives
Moisturizing ingredients split into three functional groups, and most people end up needing a mix of all three.
- Humectants — hyaluronic acid, polyglutamic acid, and glycerin among them — draw water into the skin. In a humid climate, a humectant alone is usually sufficient. Polyglutamic acid is worth a special mention — Polyglutamic acid (PGA) claims of holding 4-5x more water than hyaluronic acid. PGA forms a thin film on the skin’s surface that slows water evaporation, so it’s good at locking moisture in. In practice, most formulators use them together rather than swapping one for the other: HA for penetration and PGA as a surface seal that helps hold onto whatever HA pulled in. Together, they create an effective combination that leaves skin feeling hydrated for longer, especially for dry skin. Check out this post: LINK . Rather than swapping one for the other, most formulators combine the two: hyaluronic acid to draw moisture in, polyglutamic acid to help hold it at the surface.
- Occlusives — including petrolatum and beef tallow, sit on top and seal moisture in. This matters most in dry, low-humidity conditions: a humectant used on its own can actually pull moisture from deeper layers of skin if there isn’t enough ambient humidity to draw from, so pairing it with an occlusive is what keeps that hydration locked in. Additionally, occlusives alone won’t give you the hydration your skin needs; their role is to lock the moisture in.
- Emollients — like ceramides and squalane, soften and smooth the surface.
Dry or Dehydrated? Two Quick Tests to Find Out
Dryness and dehydration are caused by different things and call for different fixes.
Dry skin comes down to genetics and a lack of natural oil, while dehydration is about water loss and is driven by your environment — which means dehydration can affect any skin type, oily included.
Two simple checks can point you in the right direction:
- Wash your face and wait half an hour: if it feels tight, rough, or looks a little red, that leans toward dry skin.
- Try gently pinching your cheek and watching how it bounces back: if the crease it leaves lingers instead of smoothing out quickly, that’s a sign of dehydration. When dehydration is the culprit, drinking enough water and eating water-rich foods like fruit and vegetables can help alongside whatever you’re applying topically.
How To Apply Moisturizer for Maximum Benefit
The way you apply moisturizer affects how well it works almost as much as the formula itself.
Apply it while skin is still damp, right after cleansing — pat your face rather than drying it fully, then follow up with a generous layer while some moisture remains, which gives humectants something to draw from.
For especially dry skin, nighttime slugging is worth trying: apply your usual moisturizer, then seal it in with a thin layer of petroleum jelly before bed so it has all night to work.
Shopping by Skin Type: Ingredients Worth Seeking Out
Dry skin generally does best with a thick cream or ointment built around ceramides, shea butter, hyaluronic acid, and petroleum-based ingredients to restore what’s missing.
Oily skin tends to do better with a gel or lightweight lotion rather than anything rich — look for hyaluronic acid, niacinamide, and glycerin, favor non-comedogenic labels, and skip heavy oils or petroleum-heavy formulas that can feel occlusive.
Combination skin also benefits from a gel or lightweight lotion, with ingredients like squalane, glycerin, niacinamide, and dimethicone offering hydration without overwhelming oilier zones, so anything greasy or overly matte is best avoided.
