Iconic London Underglow Primer Review: Must-Have for 2026

You know that feeling when you see someone with impossibly radiant skin and wonder if they’re secretly part unicorn? That’s exactly what Iconic London promises with their Underglow Primer.

This cult-favorite product has been making waves on social media, with beauty lovers claiming it’s the secret to that coveted glowing skin look. But does it really work, or is it just another overhyped product taking up space in your makeup bag?

I spent weeks testing this primer to give you the real truth. No filters, no fancy lighting, just honest opinions about whether this product deserves a spot in your beauty routine.

Key Takeaways:

• The glow factor is real. This primer delivers a noticeable luminous finish that makes your skin look healthier and more radiant without looking greasy or overly shimmery.
• It works for multiple skin types. Whether you have dry skin that needs extra hydration or normal skin looking for added radiance, this primer adapts well to different skin needs.
• The formula is surprisingly lightweight. Despite being a glow-boosting product, it doesn’t feel heavy or sticky on your skin, making it comfortable for all-day wear.
• You can customize your glow level. Use a small amount for subtle radiance or layer it up for that full-on glazed donut effect that’s trending everywhere right now.
• Price point requires consideration. At around $38 to $42, it’s definitely an investment piece, so you’ll want to make sure it fits your budget and beauty goals.
• The packaging is travel-friendly. The pump bottle dispenses the perfect amount of product and fits easily in your makeup bag without worrying about spills or leaks.

Last update on 2026-06-21 / Affiliate links / Images from Amazon Product Advertising API Some of the links on this website are affiliate links, which means that at no additional cost to you, I earn a commission if you click through and make a purchase. I only recommend products and services that I believe will add value to my readers. Thank you for your support!

What Exactly Is Iconic London Underglow Primer

Iconic London Underglow Primer is a luminous base product designed to create a glowing canvas before you apply your foundation. Think of it as an instant radiance booster that sits between your skincare and makeup. The formula contains light-reflecting particles that catch and bounce light off your skin, creating that coveted lit-from-within effect everyone wants.

The brand launched this primer as part of their mission to make professional makeup artist techniques accessible to everyone. Iconic London built their reputation on creating products that deliver that fresh, dewy finish you see on runways and red carpets. This primer quickly became one of their bestsellers, and it’s easy to see why when you understand what it does.

The product comes in a sleek pump bottle that dispenses a pearlescent, slightly thick liquid. The consistency falls somewhere between a serum and a traditional primer. When you apply it to your skin, it melts in beautifully, leaving behind a subtle sheen that doesn’t look oily or artificial. Many users describe the finish as looking like you just had an amazing facial or got a full eight hours of sleep.

Top 3 Alternatives for Iconic London Underglow Primer

Last update on 2026-06-21 / Affiliate links / Images from Amazon Product Advertising API Some of the links on this website are affiliate links, which means that at no additional cost to you, I earn a commission if you click through and make a purchase. I only recommend products and services that I believe will add value to my readers. Thank you for your support!

Last update on 2026-06-21 / Affiliate links / Images from Amazon Product Advertising API Some of the links on this website are affiliate links, which means that at no additional cost to you, I earn a commission if you click through and make a purchase. I only recommend products and services that I believe will add value to my readers. Thank you for your support!

Last update on 2026-06-21 / Affiliate links / Images from Amazon Product Advertising API Some of the links on this website are affiliate links, which means that at no additional cost to you, I earn a commission if you click through and make a purchase. I only recommend products and services that I believe will add value to my readers. Thank you for your support!

The Formula Breakdown: What’s Actually Inside

Understanding what goes into Underglow Primer helps you know whether it’s right for your skin. The formula features a blend of light-reflecting pearls that create the signature glow effect. These aren’t chunky glitters that make you look like a disco ball. Instead, they’re finely milled particles that create a smooth, sophisticated radiance.

The primer contains hydrating ingredients that help plump and moisturize your skin while you wear it. This combination of skincare and makeup benefits means you’re not just covering your skin but actually treating it at the same time. Many users with dry skin report that this primer helps their foundation look less cakey and more skin-like throughout the day.

The texture is silky and spreads easily across your face without pilling or balling up. It absorbs relatively quickly, though you’ll want to give it about 30 seconds to a minute before applying your foundation on top. This brief waiting period allows the primer to set properly and ensures your makeup goes on smoothly without disturbing the glowy base you just created.

How to Apply Underglow Primer for Best Results

Getting the most out of your Underglow Primer comes down to proper application technique. Start with freshly cleansed and moisturized skin. Let your skincare absorb for a few minutes before reaching for the primer. This creates the perfect base and prevents any pilling or separation that can happen when products don’t play nicely together.

Pump out one to two pumps of product onto the back of your hand. This gives you better control over how much you’re applying and prevents waste. Using your fingertips, dot the primer across your forehead, cheeks, nose, and chin. Then gently blend it outward using light pressing and patting motions rather than rubbing or dragging.

For targeted glow, you can apply Underglow only to the high points of your face where light naturally hits. This means your cheekbones, bridge of your nose, cupid’s bow, and brow bones. This technique creates a more subtle, natural-looking radiance that mimics healthy skin rather than an all-over glitter effect.

Underglow Primer on Different Skin Types

Dry skin loves Underglow because of its hydrating properties. The luminous finish helps disguise any dry patches or flakiness that might show through your makeup. Many dry skin users report that their foundation looks smoother and more skin-like when applied over this primer. The glow also helps compensate for the dull appearance that dry skin sometimes has.

Oily skin users need to be more strategic with this primer. While it can work beautifully on oily skin, you might want to apply it selectively rather than all over. Try placing it on the high points of your face and using a mattifying primer on your T-zone where you tend to get shiny. This combination approach gives you glow without excess oil. Some oily skin users find that setting the primer with a light powder before foundation helps control shine throughout the day.

Combination skin can use Underglow very successfully by customizing the application. Apply it to dry areas that need extra radiance and skip your oily zones, or use it all over but follow with oil-control products in specific areas. The versatility of this primer makes it work well for combination skin types who need different things in different face zones.

Sensitive skin typically tolerates Underglow well thanks to its fragrance-free formula. However, as with any new product, patch test first if you have reactive skin. The brand doesn’t claim the product is specifically formulated for sensitive skin, but many users with sensitivities report no issues. Always listen to your skin and discontinue use if you experience any irritation or reaction.

Mixing and Layering Options for Custom Glow

One of the best features of Underglow Primer is its versatility in mixing. You can blend it directly with your foundation for an all-over subtle glow. Mix one pump of primer with your foundation on the back of your hand, then apply this custom blend to your face. This technique gives you a luminous foundation effect without the intensity of wearing the primer separately underneath.

For a more targeted approach, try layering it over foundation as a liquid highlighter. Apply your foundation and concealer as normal, then dab small amounts of Underglow on your cheekbones, bridge of your nose, and cupid’s bow. Blend gently with your fingertips or a damp beauty sponge. This creates a gorgeous highlighted effect that looks more natural than powder highlighters.

You can also mix Underglow with your body lotion for glowing arms and legs. This is perfect for special occasions or when you want your whole body to have that radiant, healthy look. A little goes a long way when mixing with body products, so start with a small amount and build up if needed.

Some creative users mix Underglow with their tinted moisturizer or BB cream for easy, glowing everyday makeup. This combination creates a your-skin-but-better effect that’s perfect for running errands or casual outings. The glow factor makes you look awake and polished without obvious makeup.

Underglow Primer Versus Traditional Highlighters

Understanding the difference between Underglow Primer and traditional highlighters helps you use each product appropriately. Highlighters sit on top of your makeup and create concentrated points of light and shimmer. They’re typically applied after foundation, powder, and the rest of your face makeup as a finishing touch.

Underglow works underneath your makeup, creating a glowing base that your foundation sits on top of. This creates a more diffused, natural radiance that comes from within your skin rather than sitting on top of it. The glow is softer and more spread out compared to the concentrated shine of a traditional highlighter.

You can absolutely use both products together for maximum impact. Apply Underglow as your primer, complete your full makeup routine, then add powder or cream highlighter to the high points of your face for extra dimension. This layering technique gives you both the lit-from-within glow and the strategic shine that highlighters provide.

The texture difference is also significant. Highlighters are usually more pigmented and contain larger shimmer particles that create obvious shine. Underglow has much finer light-reflecting particles that create a more subtle, sophisticated glow. Think of highlighter as intentional, noticeable shine, while Underglow creates that “I woke up like this” natural radiance.

Longevity and Wear Time Throughout the Day

One common question about Underglow is whether the glow lasts all day or fades quickly. Most users report that the luminous effect stays visible for six to eight hours, especially when set properly with foundation and powder. The glow does soften throughout the day, but it doesn’t completely disappear the way some liquid highlighters can.

For maximum longevity, apply Underglow to well-moisturized skin and allow it to fully absorb before adding foundation. This gives the primer time to bond with your skin properly. If you skip this step and rush into foundation application, you might notice the glow fading faster because the products didn’t have time to work together effectively.

Setting your makeup with a light dusting of translucent powder can help lock everything in place without killing the glow. Avoid over-powdering, which can mattify the luminous effect you worked to create. Focus powder on areas where you need oil control and leave the glowy areas more natural for best results.

Throughout the day, your natural oils will mix with the primer, creating an even more skin-like radiant effect. Many users actually prefer how Underglow looks after a few hours of wear compared to when first applied. The glow becomes more subtle and integrated with your skin rather than sitting on top of it.

Price Point Analysis: Is Underglow Worth the Investment

At approximately $38 to $42 depending on the retailer, Underglow Primer sits firmly in the mid-to-high price range for makeup primers. This price point might seem steep if you’re used to drugstore primers, but it’s comparable to other prestige glow-enhancing products on the market.

Consider the cost per use when evaluating whether it’s worth the investment. The bottle contains enough product for several months of regular use, especially since you only need one to two pumps per application. When broken down by daily use, the cost becomes more reasonable compared to the initial sticker shock.

The product delivers on its promises, which adds to its value proposition. You’re getting a reliable glow effect that works consistently, rather than a product that sometimes performs and sometimes disappoints. This reliability means you can trust it for important events, photos, and daily wear without worrying whether it will deliver results.

If budget is a major concern, consider using Underglow for special occasions only rather than daily wear. Apply it when you want to look your absolute best for events, photos, or important meetings, and use a more affordable primer for everyday makeup. This approach stretches your product further while still giving you access to that beautiful glow when it matters most.

Common Issues and How to Troubleshoot Them

Some users experience pilling or balling up when applying Underglow over certain skincare products. This usually happens when the primer reacts with silicone-heavy moisturizers or sunscreens. If you notice little balls forming as you blend the primer, try switching to a water-based moisturizer or allow more time for your skincare to fully absorb before applying the primer.

Too much shimmer or glitter is another complaint from users who prefer a more subtle effect. If Underglow looks too intense for your taste, try mixing it with a small amount of regular mattifying primer to tone down the shimmer. You can also use less product overall or apply it only to specific areas rather than all over your face.

If your foundation looks patchy or separates over Underglow, you might be applying it too soon after the primer or using incompatible formulas. Wait a full minute after applying the primer before moving to foundation. Also check that your foundation formula works well with luminous primers. Oil-based foundations typically work better with Underglow than heavy, full-coverage matte formulas.

Some users find the glow too subtle initially. If you’re not seeing the radiance you expected, make sure you’re using enough product. Start with two pumps and build up to three if needed. Also consider your foundation choice, as very full-coverage formulas can hide the glow effect. Lighter coverage foundations or tinted moisturizers allow more of the primer’s radiance to show through.

Real User Experiences and Results

Beauty enthusiasts across social media have shared their honest opinions about Underglow, and the consensus is overwhelmingly positive. Many users describe it as their holy grail primer for achieving that coveted glazed skin look. The most common praise focuses on how natural and skin-like the glow appears, rather than looking artificial or glittery.

Makeup artists frequently recommend Underglow to their clients who want a radiant base for photography and special events. The way it photographs is particularly impressive, creating luminosity without flashback or looking shiny in pictures. This makes it a popular choice for brides, prom attendees, and anyone who will be photographed extensively.

Some users report that Underglow transformed their makeup routine by eliminating the need for multiple glow products. Instead of layering liquid highlighter, powder highlighter, and illuminating setting spray, they achieve similar results with just the primer. This simplification saves time and money while still delivering beautiful results.

Frequently Asked Questions

Can I use Iconic London Underglow Primer on oily skin without looking greasy?

Yes, but you need to apply it strategically rather than all over your face. Focus the primer on your cheekbones, bridge of your nose, and other areas where you want glow while avoiding your T-zone where oil naturally accumulates. Setting these areas with a light powder before foundation also helps control shine while maintaining the luminous effect. Many oily skin users successfully mix Underglow with a mattifying primer for balanced results that give glow without greasiness.

Does Underglow Primer actually help makeup last longer or is it just for glow?

Underglow’s primary purpose is creating luminosity rather than extending makeup wear time. However, it does create a smooth base that helps foundation apply more evenly, which indirectly contributes to better makeup longevity. For maximum wear time, consider using a separate longevity-focused primer on areas prone to makeup breakdown, then applying Underglow where you want glow. This combination approach gives you both extended wear and radiant skin.

How much product should I use for each application?

Most users find that one to two pumps provides enough product for their entire face. Start with one pump and add more if you want a more intense glow. The primer is quite concentrated, so a little goes a long way. Using too much can make your skin look overly shimmery or cause your foundation to slide around, so it’s better to start conservatively and build up as needed.

Can I wear Underglow Primer alone without foundation?

Absolutely! Many users love wearing Underglow alone on minimal makeup days for a fresh, radiant complexion. Just apply it over your moisturizer and sunscreen for an instant glow boost. You can add concealer to spots that need coverage while letting the primer create that lit-from-within effect on the rest of your face. This approach is perfect for casual days when you want to look polished without full makeup.

Will Underglow Primer emphasize my pores or skin texture?

Underglow typically doesn’t emphasize pores significantly because the shimmer particles are finely milled rather than chunky. However, if you have very prominent pores or texture, you might want to use a pore-filling primer underneath Underglow in those specific areas. The light-reflecting properties can actually help blur minor imperfections while creating overall radiance. Apply it with patting motions rather than rubbing to minimize any potential texture emphasis.

Is Underglow Primer suitable for mature skin with fine lines?

Yes, mature skin often benefits greatly from Underglow’s luminosity. The light-reflecting particles help skin look more youthful and healthy without settling into fine lines like some shimmer products can. The hydrating formula also helps keep skin plump and smooth throughout the day. Apply it gently with patting motions and focus on areas without pronounced lines for best results. Many mature makeup users report that Underglow gives them the radiant, fresh look they’ve been seeking.