Why Do Koreans Sleep With Vaseline on Their Face? Truth Behind the Viral Slugging Trend
Written by Vangee Dyer, Founder of Bare Sunshine
Vangee Dyer is the founder of Bare Sunshine, a brand rooted in self-love, resilience, and transformation. Drawing from lived experience, she inspires others to reclaim confidence and glow from the inside out.
Yet millions of skincare enthusiasts swear by it. The truth is that slugging is not about adding moisture to the skin. It's about protecting the moisture already there. In a world where many people are over-exfoliating, over-treating, and overwhelming their skin with too many products, slugging represents a return to one of the most important principles in skincare, protecting the skin barrier. Let's explore why this trend has become so popular and whether it deserves a place in your skincare routine.
What is slugging?
Slugging is the practice of applying a thin layer of an occlusive product, most commonly Vaseline (petroleum jelly), as the final step in your nighttime skincare routine. The purpose is simple. Create a protective seal over the skin to help prevent moisture loss while you sleep.
Throughout the night, our skin naturally loses water through a process called Transepidermal Water Loss (TEWL). Slugging helps reduce that loss by creating a barrier that locks in hydration and supports the skin's natural repair process.
The result? Many people wake up with skin that feels softer, smoother, and more hydrated.
Why is slugging so popular in Korean skincare?
Korean beauty has always emphasized prevention rather than correction. Instead of waiting for skin problems to develop, Korean skincare focuses on maintaining healthy, hydrated skin through consistent care. Slugging aligns perfectly with this philosophy because it helps support one of the skin's most important functions, barrier protection.
A healthy skin barrier helps:
Retain moisture
Defend against environmental stressors
Reduce dryness and irritation
Improve overall skin appearance
Support healthier-looking skin over time
For many Korean skincare enthusiasts, slugging is simply another way to strengthen and protect the skin they already have.
The benefits of sleeping with vaseline on your face
Locks in hydration: One of Vaseline's greatest strengths is its ability to reduce moisture loss. Rather than adding hydration itself, it helps keep hydration from escaping. This can be especially beneficial during colder months, in dry climates, or for individuals with naturally dry skin.
Supports skin barrier recovery: A compromised skin barrier can leave skin feeling tight, irritated, flaky, and sensitive. By creating a protective layer over the skin, Vaseline may help support the skin's natural recovery process and improve comfort while sleeping.
Creates a softer, smoother appearance: Hydrated skin often appears plumper and smoother. Many people report waking up with skin that feels noticeably softer after slugging.
Helps combat dry patches: Areas around the nose, mouth, and cheeks are particularly prone to dryness. Slugging can help protect these areas overnight and reduce rough texture.
Encourages the glass skin look: The famous Korean "glass skin" appearance is rooted in hydration, smooth texture, and healthy skin, not heavy makeup. Slugging can help support the hydrated appearance that contributes to this sought-after glow.
Can slugging help hyperpigmentation?
This is where many people become confused. Slugging does not directly treat hyperpigmentation, dark spots, or discoloration. Vaseline is not a brightening ingredient.
However, healthy skin barriers play an important role in the overall appearance and recovery of the skin. When the skin is excessively dry, irritated, or inflamed, it may struggle to recover effectively from acne, blemishes, or environmental stressors. Supporting skin barrier health can create a healthier environment for your skincare products to work more effectively.
This is why many skincare professionals emphasize hydration and barrier support as part of a comprehensive skincare routine.
Is slugging right for everyone?
Not necessarily. Individuals with dry, dehydrated, or compromised skin barriers often benefit the most from slugging.
However, those with oily or acne-prone skin may find heavy occlusive products too rich for their skin type. As with any skincare trend, understanding your skin's unique needs is more important than following what is popular online. The best skincare routine is the one that works for your skin.
What the slugging trend teaches us about modern beauty
Perhaps the most interesting thing about slugging is what it represents. For years, the beauty industry convinced consumers that more products meant better skin. More serums. More acids. More treatments.
Today, people are beginning to realize that healthy skin often thrives on simplicity. Slugging reflects a larger movement toward skin barrier health, hydration, and intentional skincare rather than excessive skincare. In many ways, it mirrors the rise of Bare Beauty.
The bare sunshine perspective
At Bare Sunshine, we believe beautiful skin begins with healthy skin. Whether you're managing hyperpigmentation, dark spots, uneven skin tone, dryness, or simply seeking a natural glow, the foundation is always the same, consistency, hydration, and skin barrier support.
The popularity of slugging reinforces a principle we embrace every day. Healthy skin doesn't always need more products. Sometimes it simply needs better care.
Our mission has always been to help people feel confident in their skin by focusing on nourishment, education, and effective skincare solutions that support long-term skin health. Because glowing skin isn't about perfection. It's about creating healthy habits that allow your natural radiance to shine through.
Final thoughts
So why do Koreans sleep with Vaseline on their face? Because sometimes the simplest skincare solutions are the most effective.
Slugging has become popular not because it's complicated, but because it helps protect one of the skin's most valuable assets, its moisture barrier.
Whether or not slugging becomes part of your routine, its popularity serves as an important reminder that healthy skin begins with hydration, protection, and consistency. Perhaps that's the real secret behind the glow.
Ready to glow smarter?
Discover more skincare tips, beauty trends, and expert guidance on achieving healthy, radiant skin here. Because at Bare Sunshine, we believe everyone deserves to love the skin they're in.
Bare Sunshine. Love the skin you're in™
Read more from Vangee Dyer
Vangee Dyer, Founder of Bare Sunshine
Vangee Dyer is the founder of Bare Sunshine, a skincare brand born from a deeply personal journey with hyperpigmentation and self-acceptance. With a background in public relations and promotions, she has supported community-centered initiatives that celebrate culture, confidence, and empowerment. Vangee serves on the governing board of her local church assembly, where she helps integrate outreach and community-focused events. Her work blends storytelling, purpose-led entrepreneurship, and advocacy for self-love. Through Bare Sunshine, she encourages others to embrace healing, confidence, and the best version of themselves.
