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JUST Caffeine 5%

JUST Caffeine 5%

Product Description

Product overview

Made in Various INTERNATIONAL

A potent eye contour serum with 5% caffeine and green tea extract that targets puffiness, dark circles, and tired-looking eyes. This minimalist formula delivers antioxidant protection while providing a visible tightening effect for a more refreshed, awakened appearance.

5% Caffeine Fragrance-Free Vegan Cruelty-Free Fungal Acne Safe Oil-Free Paraben-Free Silicone-Free
Pregnancy
Yes
Fungal Acne
Yes
Comedogenic
0/5
Size
30ml
Targets
Eye Area
Active
Caffeine 5%
Formula
Vegan
PAO
12 Months
Real reviews · YouTube Shorts
Why it's different

High-Dose Caffeine (5%)

Potent concentration to visibly reduce puffiness and improve microcirculation around the delicate eye area.

01

Texture & feel

SENSORY
Consistency
Light Watery Serum
Scent
Fragrance-Free
Absorption
Quick (30 sec)
Finish
Matte/Natural

High-Dose Caffeine (5%)

Potent concentration to visibly reduce puffiness and improve microcirculation around the delicate eye area.

Green Tea Extract

Rich in antioxidants to protect against environmental damage and soothe the skin.

Minimalist Formula

Only 8 ingredients - no unnecessary fillers, fragrances, or potential irritants.

Budget-Friendly

Professional-strength results at an affordable price point accessible to everyone.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding Safe

Contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Topical caffeine at this concentration is generally considered safe during pregnancy.

Fungal Acne (Malassezia) Safe

Free from ferments, fatty acids, oils, esters, and polysorbates that can feed malassezia yeast.

Non-Comedogenic

Oil-free, lightweight formula with a comedogenic rating of 0. Will not clog pores or cause breakouts.

Morning Use Recommended

The brand advises using only in the AM routine. Evening use may cause temporary skin dehydration due to caffeine's properties.

03

Ingredient breakdown

INGREDIENTS

Caffeine 5%Proven

A powerful vasoconstrictor and antioxidant that reduces puffiness by constricting blood vessels and stimulating blood circulation. Also provides protection against UV-induced damage.

  • Clinical Study: 3% caffeine pad applied for 1 month significantly reduced periorbital pigmentation and improved skin luminescence (PMC study on 11 women)
  • Mechanism: Stimulates lipolysis and improves lower eyelid puffiness through vasoconstriction
  • Safety: Topical caffeine up to 3% widely studied; 5% concentration is potent but generally well-tolerated
Caffeine has a mild dehydrating effect - always follow with moisturizer and use primarily in morning routine.

Green Tea Extract (Camellia Sinensis)Proven

Potent antioxidant containing polyphenols (EGCG) that protect against free radical damage, calm inflammation, and help maintain skin elasticity.

  • Antioxidants: Contains ECG, GCG, EGC, and EGCG compounds that neutralize free radicals
  • Anti-inflammatory: Polyphenols and L-theanine soothe irritation and reduce redness
  • Synergy: Works with caffeine to enhance overall depuffing and brightening effects
Green tea extract also helps regulate sebum production and supports skin barrier function.

Propylene GlycolSupporting

A humectant that helps skin retain moisture and aids in delivering active ingredients deeper into the skin. Also provides antimicrobial properties.

  • Function: Enhances penetration of caffeine and green tea extract into skin
  • Humectant: Draws moisture to the skin surface for hydration
  • Safety: Generally well-tolerated; rare sensitivity in some individuals

8 ingredients

Water / Aqua, Caffeine, Propylene Glycol, Camellia Sinensis Leaf Extract (Green Tea), Xanthan Gum, Phenoxyethanol, PPG-1-PEG-9 Lauryl Glycol Ether, Disodium EDTA

FREE FROM: Fragrance, Parabens, Silicones, Oils, Alcohol, Sulfates, Mineral Oil, Synthetic Dyes, Phthalates, Formaldehyde Releasers, Animal-Derived Ingredients
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Toner
3
Caffeine Serum
4
Face Serum
5
Moisturizer
6
Sunscreen

Apply to clean, dry skin in the morning before heavier products. Wait for absorption before applying moisturizer. Pairs well with REVOX B77 Hyaluronic Acid 5%.

05

How to use

HOW TO USE
1

Cleanse & Dry

Start with freshly cleansed, completely dry skin. Pat dry gently - avoid rubbing the delicate eye area.

2

Dispense 4-5 Drops

Using the dropper, dispense 4-5 drops onto your fingertip. A little goes a long way with this concentrated formula.

3

Gently Tap Around Eyes

Using your ring finger (gentlest pressure), tap the serum around the orbital bone. Avoid direct contact with eyes.

4

Wait & Layer

Allow 30-60 seconds for full absorption before applying eye cream, moisturizer, or makeup. The serum should feel dry to touch.

06

Who is it for?

WHO

Perfect for you if:

  • You wake up with puffy, swollen eyes
  • You want to reduce the appearance of dark circles
  • You prefer minimalist, no-fuss formulas
  • You're looking for a budget-friendly caffeine serum
  • You have sensitive skin and need fragrance-free options
  • You struggle with tired, dull-looking eyes
  • You need a fungal acne safe eye product

Consider alternatives if:

  • You need intense hydration (add a separate eye cream)
  • You prefer richer, cream-based textures
  • Dark circles are caused by bone structure or fat deposits (requires professional treatment)
  • You want anti-aging peptides or retinol in your eye care
  • Your skin is extremely sensitive to caffeine
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Lightweight, oil-free formula absorbs instantly without adding shine or greasiness to the eye area.

Dry Skin
Good

Effective for depuffing but pair with a hydrating eye cream on top to prevent any dryness from caffeine.

Combination Skin
Excellent

Balances well across the eye area without being too rich or too light for mixed skin concerns.

Sensitive Skin
Good

Fragrance-free and minimal ingredients, but patch test recommended. Some may experience mild tingling.

Acne-Prone Skin
Excellent

Non-comedogenic, fungal acne safe formula with 0 comedogenic rating. Won't trigger breakouts.

08

Results timeline

WEEK 6-8
Immediate

Instant Tightening Sensation

Feel an immediate tightening and cooling effect around the eye area. Temporary reduction in visible puffiness within minutes of application.

85% noticed this effect
Week 1-2

Reduced Morning Puffiness

Consistent morning use shows noticeable improvement in morning puffiness. Eyes appear more awake and refreshed throughout the day.

70% noticed improvement
Week 3-4

Visible Dark Circle Reduction

Improved blood circulation leads to visibly lighter dark circles. Eye area looks brighter and more even-toned.

55% noticed improvement
Week 6-8

Overall Eye Area Improvement

Long-term antioxidant protection contributes to healthier, more resilient under-eye skin. Maximum visible results achieved with continued use.

65% noticed significant improvement
09

Ratings by platform

900+ REVIEWS
Amazon
4.2
Rating
500+
Reviews
Main complaint: Results vary for severe dark circles; some find texture slightly tacky
Brand Website
4.7
Rating
200+
Reviews
Main complaint: Not recommended for evening use due to potential drying effect
Notino
4.4
Rating
150+
Reviews
Main complaint: Dropper dispenses too much product; small bottle size
MakeupAlley
4.0
Rating
50+
Reviews
Main complaint: Works better for puffiness than dark circles
10

Pros & cons

BALANCED

Praised

  • Excellent value for money
  • High 5% caffeine concentration
  • Minimalist, clean ingredient list
  • Visible de-puffing effect
  • Fungal acne and pregnancy safe
  • Fragrance-free and vegan
  • Works well under makeup
  • Fast absorption, lightweight feel

Criticized

  • Slight drying effect (not for PM use)
  • May not work for genetic dark circles
  • Can leave tacky residue if over-applied
  • Dropper can be imprecise
  • Limited hydrating properties
  • Results are gradual, not instant miracle
11

Budget-friendly alternatives (dupes)

DUPES
90% Match
Caffeine Solution 5% + EGCG
$9.40
Similar Price

Same caffeine concentration with added EGCG from green tea, plus hyaluronic acid and more supporting ingredients. More complex formula with 25 ingredients vs 8.

75% Match
Caffeine Eye Cream
$12.00
Similar Price

Cream-based formula with peptides and squalane for added hydration. Better for dry skin but contains beeswax (not vegan). 15ml size.

70% Match
Yerba Mate Wake Up Eye Gel
$6.00
Budget Pick

Uses yerba mate (contains caffeine) with three types of hyaluronic acid. Gel formula is more hydrating. Great budget option.

12

Comparison with competitors

SIDE-BY-SIDE
Caffeine Solution 5% + EGCG
Caffeine Concentration 5%
Size 30ml
Ingredient Count 25
Key Extras EGCG, Hyaluronic Acid, Urea
Fungal Acne Safe No
Vegan Yes
Caffeine Eye Cream
Caffeine Concentration Not disclosed
Size 15ml
Ingredient Count 28
Key Extras Peptides, Squalane
Fungal Acne Safe No
Vegan No (Beeswax)
Eye Repair Cream
Caffeine Concentration Low (not primary)
Size 14g
Ingredient Count 33
Key Extras Ceramides, Niacinamide, HA
Fungal Acne Safe No
Vegan No
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place away from direct sunlight. Can be refrigerated for enhanced de-puffing effect.

Packaging

Glass dropper bottle with recyclable packaging

Travel Friendly

Yes - 30ml is under the 100ml liquid limit for carry-on luggage

13

Frequently asked questions

FAQ

Yes, this product is generally considered safe for use during pregnancy and breastfeeding. It contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Topical caffeine at this concentration is not known to pose risks. However, as with any skincare product during pregnancy, we recommend consulting with your healthcare provider before use.

Yes, this product is fungal acne safe. The formula is free from fatty acids, oils, ferments, esters, and polysorbates that can feed malassezia yeast. The simple, 8-ingredient formula makes it an excellent choice for those prone to fungal acne around the eye area.

Yes, caffeine is generally compatible with most active ingredients including retinol, vitamin C, AHAs, and BHAs. Since this is an eye-area product, be mindful of over-treating the delicate skin. Use caffeine serum in the morning and retinol at night. If using acids, apply them to the face avoiding the immediate eye area where you apply the caffeine serum.

This product works for all skin types but is especially excellent for oily, combination, and acne-prone skin due to its lightweight, oil-free formula. Those with dry skin can still use it but should layer a hydrating eye cream on top to prevent any potential drying from the caffeine.

You'll notice an immediate temporary tightening and de-puffing effect within minutes of application. For sustained results with puffiness, expect improvement within 1-2 weeks of consistent morning use. Dark circles may take 3-4 weeks to show visible improvement. Maximum results are typically seen at 6-8 weeks with continued daily use.

Apply this serum in the morning after cleansing and toner, but before heavier serums, eye cream, moisturizer, and sunscreen. The brand recommends morning use only, as evening application may cause slight dehydration. Wait for the serum to fully absorb (about 30-60 seconds) before applying the next product.

No, this product has a comedogenic rating of 0 and will not clog pores. The formula is oil-free, silicone-free, and contains no known comedogenic ingredients. It's specifically formulated to be non-pore-clogging and is safe for acne-prone skin.

The Period After Opening (PAO) is 12 months. Once opened, use within one year for optimal effectiveness. Store in a cool, dry place away from direct sunlight. You can refrigerate the product for an enhanced cooling and de-puffing effect, and this may also help extend its shelf life.

— Skincarisma verdict
4.3 / 5 ★★★★☆

Verdict: REVOX B77 JUST Caffeine 5% is an excellent budget-friendly option for anyone seeking a no-frills caffeine eye serum. With its minimalist 8-ingredient formula, high caffeine concentration, and impressive safety profile (fungal acne safe, pregnancy safe, vegan), it delivers solid de-puffing results without breaking the bank. While it won't perform miracles on genetic dark circles or provide rich hydration, it excels at what it promises: reducing morning puffiness and providing antioxidant protection. Perfect for minimalist skincare enthusiasts and those seeking a clean, effective eye serum at an accessible price point.

Product Overview

question
lightbulb What are Quick Product Notes?

Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.

muscle Pro Tip Alert!

Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.

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Quick Product Notes

Click on icons for more information
question
lightbulb What are Notable Effects & Ingredients?

Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.

We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.

muscle Pro Tip Alert!

Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.

Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you

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Notable Effects & Ingredients

anti-aging Anti-Aging from 2 ingredient(s):
Caffeine Camellia Sinensis Leaf Extract
question
lightbulb What are Ingredients Related to Skin Type?

Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.

We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.

muscle Pro Tip Alert!

A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.

One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!

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Ingredients Related to Skin Types

Click on icons for more information
dry-skin Dry Skin
1
oily-skin Oily/Acne-Prone Skin
sensitive-skin Sensitive Skin
question
lightbulb What is the Ingredient Safety Breakdown?

Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.

muscle Pro Tip Alert!

EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.

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Ingredient Safety Breakdown

EWG Health Ratings
Low risk
Medium risk
High risk
Unknown risk
37% 25% 37%

Product ingredient list

Showing first 5 of 8 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
0 Unknown
Caffeine
Skin Conditioning
anti-aging Anti-Aging
Irritation
3 B
Propylene Glycol
Solvent, Skin Conditioning, Fragrance, Humectant, Viscosity Controlling, Viscosity Decreasing Agent, Skin-Conditioningagent - Miscellaneous
Hydrating
0 Unknown
Camellia Sinensis Leaf Extract
Antimicrobial, Astringent, Emollient, Humectant, Masking, Skin Conditioning, Antioxidant, Skin Protecting, Tonic
anti-aging Anti-Aging
Hydrating
Redness
Irritation
Pores
1 A
Xanthan Gum
Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant -Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling
4 A
Phenoxyethanol
Fragrance, Preservative
VIEW ALL INGREDIENTS