Beauty IT Cosmetics Bye Bye Under Eye Concealer: Shades and Review
IT Cosmetics Bye Bye Under Eye is the concealer that promises full coverage without the cakey finish. Developed with plastic surgeons, this waterproof formula uses peptides, collagen, and hyaluronic acid to treat skin while concealing. A tiny dot covers dark circles that lighter concealers cannot touch.
The formula is famously thick, which is both its strength and its learning curve. Used correctly, it delivers natural-looking full coverage that lasts up to 24 hours. Used heavily, it creases and looks mask-like. Shade matching matters enormously across the numbered shade system.
This guide covers the five key Bye Bye Under Eye options, from fair to tan shades plus the travel size. You will learn how to pick your shade number, apply without creasing, and decide if this cult concealer suits your skin. Let us banish dark circles properly.
Full-coverage concealer technique differs from regular concealer application. Less product does more: a pinhead-sized amount covers the entire under-eye area. Warm the product between your fingers first to thin it for smoother blending. Apply only where darkness lives, typically the inner corner and along the orbital bone. Pat, never drag, to avoid moving the product. Build in thin layers rather than applying one thick coat. These techniques prevent the caking that gives full-coverage concealers a bad reputation. Mastered properly, Bye Bye Under Eye looks like skin, not makeup.
Key Takeaways
- Our top pick balances performance, gentleness, and value for most people.
- Match the formula to your specific needs using the buying criteria below.
- Read real verified reviews before buying, since marketing claims often overpromise.
Quick Answer: Top 3 Picks
- IT Cosmetics Bye Bye Under Eye Concealer, 10.5 Light Full-coverage concealer in 10.5 Light for cool undertones.
- IT Cosmetics Bye Bye Under Eye Concealer, 14.0 Light Tan Full-coverage concealer in 14.0 Light Tan, warm undertone.
- IT Cosmetics Bye Bye Under Eye Concealer, Travel 13.0 Light Natural Travel-size concealer in 13.0 Light Natural.
Full reviews and comparisons below.
On This Page
- Our Top Picks
- Understanding the Shade Number System
- The Crease-Free Application Method
- Who Should Buy It and Who Should Skip
- Travel Size vs Full Size: Smart Shopping
- Bye Bye Under Eye vs Other Full-Coverage Concealers
- Concealer for Mature Under-Eyes
- IT Concealer Shade Matching Guide
- Frequently Asked Questions
Our Top Picks
Best for: Fair cool-toned skin with stubborn dark circles.
#1 Best OverallIT Cosmetics Bye Bye Under Eye Concealer, 10.5 Light
- Full-coverage concealer in 10.5 Light for cool undertones
- Peptides, collagen, and hyaluronic acid treat skin
- Water-resistant formula lasts up to 24 hours
- Highly pigmented, a tiny dot covers dark circles
Pros
- Covers the darkest circles completely
- Skincare ingredients improve skin over time
- One tube lasts for months
Cons
- Thick texture can crease if over-applied
- Light shade suits only fair skin
- Premium price for a concealer
Best for: Light to medium warm skin needing serious coverage.
Runner-UpIT Cosmetics Bye Bye Under Eye Concealer, 14.0 Light Tan
- Full-coverage concealer in 14.0 Light Tan, warm undertone
- Anti-aging formula with antioxidants and vitamin E
- Crease-proof wear that stays natural all day
- Developed with plastic surgeons for real results
Pros
- Warm undertone brightens sallow under-eyes
- Doubles as a lightweight foundation
- Water-resistant through long days
Cons
- Warm tone can look orange on cool skin
- Needs setting powder to prevent creasing
- Thick formula needs warming before blending
Best for: Testing the cult concealer or keeping one in your bag.
Best ValueIT Cosmetics Bye Bye Under Eye Concealer, Travel 13.0 Light Natural
- Travel-size concealer in 13.0 Light Natural
- Same full-coverage anti-aging formula, smaller tube
- Neutral undertone suits many light skin tones
- Compact 0.11 fl oz size for purses and travel
Pros
- Try the formula before committing to full size
- Perfect for travel and touch-ups
- Neutral shade is very forgiving
Cons
- Small size runs out quickly with daily use
- Worse value per ounce than full size
- Tiny tube is fiddly to squeeze
Best for: Medium skin tones wanting full coverage that looks natural.
IT Cosmetics Bye Bye Under Eye Concealer, 20.0 Medium
- Full-coverage concealer in 20.0 Medium, neutral undertone
- Hydrolyzed collagen smooths fine lines
- Natural finish that never looks cakey
- Stays put through sweat and humidity
Pros
- Medium neutral suits a wide range of tones
- Smooths rather than settles into lines
- Excellent for mature under-eye skin
Cons
- Medium may run dark on light skin
- Requires blending skill for best results
- Can look heavy without proper prep
Best for: Tan skin tones that struggle to find matching concealers.
IT Cosmetics Bye Bye Under Eye Concealer, 33.5 Tan Natural
- Full-coverage concealer in 33.5 Tan Natural
- Neutral undertone flatters tan complexions
- Waterproof wear for up to 24 hours
- Anti-aging peptides firm delicate skin
Pros
- One of few full-coverage options in deeper light-tan
- Covers hyperpigmentation around eyes
- Long wear suits humid climates
Cons
- Limited deeper shade range overall
- Thick formula demands careful blending
- Setting is a must to avoid transfer
Understanding the Shade Number System
IT Cosmetics uses a numbered shade system that confuses first-time buyers. Lower numbers mean lighter shades: 10.5 Light suits fair cool skin, 13.0 Light Natural is the neutral light option, 14.0 Light Tan warms things up. Mid-range 20.0 Medium covers classic medium neutral skin. Deeper 33.5 Tan Natural serves tan complexions. The decimal indicates undertone: .0 shades are neutral, .5 shades lean cool or warm. When in doubt between shades, choose the lighter one, since the full coverage can be sheered out but a too-dark shade looks obvious. Check the undertone description: cool undertones need pink-based shades, warm need golden, neutral can wear either. The travel size in 13.0 Light Natural is the smartest way to test your match. Many buyers discover their ideal shade differs from their foundation shade, so test on the under-eye area specifically.
The Crease-Free Application Method
This concealer creases when over-applied, so less is truly more. Warm a rice-grain amount between your fingertip to thin the thick texture. Dot it only where darkness lives, usually the inner corner and along the orbital bone. Never swipe it across the whole under-eye like foundation. Blend by tapping gently with your ring finger or a damp sponge. The warmth of your finger melts the formula beautifully. Build in sheer layers if one pass is not enough. Set immediately with a tiny amount of translucent powder pressed in with a fluffy brush. Baking with heavy powder causes the very creasing you want to avoid. This method takes practice but delivers the flawless finish the product is famous for. Heavy-handed application is the number one complaint, and it is always user error.
Who Should Buy It and Who Should Skip
This concealer suits specific needs brilliantly and others poorly. Buy it if you have genuine dark circles that medium-coverage concealers cannot hide. Mature skin benefits from the anti-aging ingredients and full coverage of fine lines. Oily skin appreciates the waterproof long wear. Anyone wanting a concealer that doubles as foundation will love the coverage. Skip it if you have minimal darkness, since the thickness is overkill and lighter formulas look more natural. Very dry under-eyes may find it emphasizes texture without careful prep. Beginners who apply heavily will struggle until they learn the less-is-more technique. If you prefer a brightening sheer concealer, this is not it. Honest self-assessment saves money: match the product to your actual darkness level.
Travel Size vs Full Size: Smart Shopping
The travel size in 13.0 Light Natural costs roughly half the full size for about a quarter of the product. The math favors full size for committed users. But the travel size serves two smart purposes: testing the formula and your shade before investing, and keeping a backup in your bag. The full 0.4 oz tube lasts most users four to six months because so little is needed per application. That brings the daily cost well under drugstore concealers that get used up faster. Watch for value sets during holiday sales, which often bundle the concealer with brushes. Buy the travel size first if you are unsure about shade or texture. Upgrade to full size once you are converted, which most buyers are.
Bye Bye Under Eye vs Other Full-Coverage Concealers
Tarte Shape Tape is the most common comparison, and the differences are real. Shape Tape is thinner and more liquid, spreading easily but offering slightly less coverage per dot. IT Bye Bye Under Eye is thicker and more concentrated, covering more with less product. NARS Radiant Creamy Concealer sits between them: medium coverage with a luminous finish. For maximum dark circle coverage, IT wins on pigment density. For quick everyday blending, Shape Tape is faster. Price per ounce favors IT because you use so little per application. A single tube can last six months of daily use. Shape Tape users often finish bottles faster. Finish differs too: IT looks more matte and perfected, Shape Tape looks more skinlike. NARS suits those who want brightening over full correction. Under-eye texture matters: very dry under-eyes may prefer the creamier NARS, while oily skin prefers IT staying power. All three are excellent products. Choose IT when coverage is the priority. Choose Shape Tape for speed and blendability. Choose NARS for luminosity. Your main concern should pick your concealer, not brand hype.
Concealer for Mature Under-Eyes
Under-eye skin changes with age, and concealer technique must adapt. Fine lines deepen, so thick concealer settles into them more visibly. The solution is thinner application, not more product. Warm Bye Bye Under Eye between fingertips before applying to thin it naturally. Pat a sheer layer only where darkness lives, usually the inner corner. Avoid dragging product across the entire under-eye, which emphasizes texture. Hydration prep becomes critical after forty: apply eye cream and wait three full minutes before concealer. The IT peptide formula works well on mature skin because it flexes rather than cracking. Set with the tiniest amount of powder, or skip powder if very dry. A damp sponge pressed over finished concealer melds it into skin beautifully. Color choice shifts too: overly light shades highlight texture, so stay close to your skin tone. Brightening comes from correct placement, not lighter color. These adjustments keep full coverage flattering at every age.
IT Concealer Shade Matching Guide
Choosing the right Bye Bye Under Eye shade prevents the most common concealer mistake. The range uses numbers: lower numbers are lighter, higher numbers are deeper. 11.0 Porcelain suits very fair skin with cool undertones. 12.0 Light Natural works for fair to light warm skin. 20.0 and 21.0 Medium cover the light-medium range. 31.0 and 32.0 Tan suit medium-deep skin. 40.0 and 41.0 Deep are formulated for deep skin tones. When between shades, choose the slightly lighter option for brightening effect. But avoid going more than one shade lighter than your skin: too-light concealer looks ashy. Test shades on your jawline in natural daylight, not store lighting. The under-eye area is thinner and often darker than the jaw, so the jaw test gives your true base match. Consider buying two shades: your match plus one lighter for brightening the inner corner. Seasonal changes may require switching shades between summer and winter. The right shade disappears into skin while erasing darkness.
How to Choose Within Your Budget
Budget options work well for everyday needs. Mid-range products often deliver better ingredients and performance. Premium options suit those wanting the best formulas. Price does not always equal quality: several of our top picks are affordable. Set your budget first, then choose the best performer within it.
Final Thoughts
Choosing the right it cosmetics bye bye under eye concealer product comes down to matching formulas to your specific needs and routine, not chasing viral trends. Start with our top pick for the safest bet, or use the buying criteria above to narrow down based on your needs and budget. Consistency matters more than perfection: even the best product needs regular use for great results.
How We Test and Rank Products
We start with search data to find the products real shoppers actually buy. Then we analyze thousands of verified Amazon reviews, looking for patterns in praise and complaints. We check ingredient lists against expert guidance and compare specifications side by side. Products earn their ranking through consistent real-world performance, not marketing budgets.
Frequently Asked Questions
Match to your under-eye area, not your foundation. Fair cool skin suits 10.5 Light, fair neutral suits 13.0 Light Natural, light warm suits 14.0 Light Tan, medium suits 20.0 Medium, tan suits 33.5 Tan Natural. When between shades, go lighter. The travel size lets you test cheaply.
You are using too much. This concealer needs only a rice-grain amount per eye. Warm it on your finger first, dot sparingly, and blend well. Heavy application always looks cakey. Set with minimal powder. Less product gives better results.
It can if over-applied or unset. Use the thin-layer method and set immediately with a small amount of translucent powder. Well-moisturized under-eyes crease less. The formula itself is crease-resistant when applied correctly. Technique matters more than the product.
Yes, it was developed with mature skin in mind. The peptides and hyaluronic acid treat fine lines while concealing. The full coverage hides age-related darkness well. Use the thin application method to avoid settling into lines. Many women over forty call it their holy grail.
Yes, many users do. Its full coverage and skin-like finish work as a light foundation when sheered out. Mix with moisturizer for a tinted effect. Use sparingly and blend well. It is not formulated as foundation, but it performs beautifully this way.