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Knock Out Acne Spot Treatment

Knock Out Acne Spot Treatment

Product Description

Product overview

Made in Various INTERNATIONAL

A powerful yet gentle spot treatment featuring 1.8% Salicylic Acid and Wintergreen Extract to deeply cleanse pores, fight whiteheads, blackheads, and early-stage blemishes without over-drying. This science-meets-nature formula brings breakout-prone skin back to balance.

Dermatologist-Tested Fragrance-Free Vegan Cruelty-Free Non-Comedogenic All Skin Types
Pregnancy
Caution
Fungal Acne
Yes
Comedogenic
1/5
Size
10ml / 0.33 oz
Key Active
1.8% Salicylic Acid
pH Level
3.5-4.0
Target
Blemishes
Usage
1-3x Daily
Real reviews · YouTube Shorts
Why it's different

Targeted Spot Treatment

Precisely targets individual blemishes without affecting surrounding healthy skin, minimizing irritation.

01

Texture & feel

SENSORY
Consistency
Lightweight Gel
Scent
Fragrance-Free
Absorption
2 minutes
Finish
Matte

Targeted Spot Treatment

Precisely targets individual blemishes without affecting surrounding healthy skin, minimizing irritation.

Dual BHA Action

Combines pharmaceutical salicylic acid with natural willow bark for enhanced pore-penetrating power.

Botanical Soothing Complex

Elderberry, meadowsweet, and licorice root calm inflammation while treating breakouts.

Fast-Acting Formula

Visible reduction in blemish size and redness within 24-48 hours of consistent application.

02

Safety & compatibility

SAFE
Pregnancy & Breastfeeding

Contains 1.8% salicylic acid. While under the 2% threshold considered safe by ACOG, consult your healthcare provider before use during pregnancy or breastfeeding.

Fungal Acne (Malassezia) Safe

Free from ferments, fatty acids, and esters that feed malassezia yeast. Contains zinc PCA and azelaic acid which have anti-fungal properties.

Non-Comedogenic

Oil-free, lightweight gel formula won't clog pores. Comedogenic rating of 1/5 makes it safe for acne-prone skin.

Sun Sensitivity

Salicylic acid can increase photosensitivity. Always use SPF 30+ during the day when using this product.

03

Ingredient breakdown

INGREDIENTS

Salicylic Acid 1.8%Proven

A beta-hydroxy acid (BHA) that penetrates deep into pores to dissolve oil, dead skin cells, and debris. FDA-approved for acne treatment.

  • Mechanism: Oil-soluble, allowing penetration into sebum-filled pores
  • Clinical Evidence: Multiple studies confirm efficacy at 0.5-2% concentrations
  • Benefits: Exfoliates, anti-inflammatory, comedolytic
May cause initial purging. Start with once daily application and increase as tolerated.

Azelaic Acid SupportingProven

A multitasking acid with antibacterial, anti-inflammatory, and brightening properties. Helps prevent post-acne hyperpigmentation.

  • Research: Effective against P. acnes bacteria at lower concentrations
  • Bonus: Tyrosinase inhibitor helps fade acne marks
  • Safety: Pregnancy Category B - one of the safest acne treatments
Gentle enough for sensitive skin and can be used with other actives.

Wintergreen Leaf Extract SupportingPromising

Natural source of methyl salicylate, working synergistically with salicylic acid to purify skin and reduce excess sebum production.

  • Source: Gaultheria procumbens (Wintergreen) plant
  • Action: Purifying and sebum-regulating
  • Traditional Use: Long history in topical skin treatments

Willow Bark Extract SupportingPromising

Natural precursor to salicylic acid from Salix nigra. Provides gentle exfoliation while calming redness and reducing oiliness.

  • Source: Black willow bark (Salix nigra)
  • Action: Contains salicin, a natural BHA precursor
  • Benefits: Exfoliating, anti-inflammatory, astringent

Zinc PCA SupportingProven

A zinc salt that regulates sebum production and has antimicrobial properties. Helps control oil and prevent new breakouts.

  • Research: Clinically proven to reduce sebum secretion
  • Mechanism: Inhibits 5-alpha reductase enzyme
  • Bonus: Antioxidant and skin-conditioning properties

Elderberry (Sambucus Nigra) SupportingPromising

Antioxidant-rich fruit juice with antimicrobial properties that helps cleanse and calm irritated skin.

  • Action: Rich in anthocyanins and flavonoids
  • Benefits: Antioxidant, anti-inflammatory, soothing

16 ingredients

Active Ingredient: Salicylic Acid 1.8%

Inactive Ingredients: Water (Aqua), Pentylene Glycol, Sodium Polyacrylate Crosspolymer-6, Gaultheria Procumbens (Wintergreen) Leaf Extract, Glycerin, Azelaic Acid, Salix Nigra (Willow) Bark Extract, Aloe Barbadensis Leaf Juice, Zinc PCA, Dipotassium Glycyrrhizate, Sambucus Nigra Fruit Juice, Spiraea Ulmaria Flower Extract, Citric Acid, Sodium Hydroxide, Phenoxyethanol

FREE FROM: Fragrance, Parabens, Sulfates, Phthalates, Mineral Oil, Essential Oils, Artificial Colors, Silicones, Alcohol (Drying)
04

Where it fits in your routine

ROUTINE
1
Cleanser
2
Toner
3
Spot Treatment
4
Serum
5
Moisturizer
6
Sunscreen (AM)

Apply directly to clean, dry skin after toner. Allow 2 minutes to dry before applying other products. Use AM and/or PM.

05

How to use

HOW TO USE
1

Cleanse & Dry

Start with clean, dry skin. Remove all makeup, sunscreen, and impurities with your favorite cleanser.

2

Apply to Blemishes

Apply a small amount of Knock Out directly onto the blemish. A little goes a long way - don't over-apply.

3

Let It Dry

Allow 2 minutes for the treatment to fully absorb and dry before applying other skincare products.

4

Follow with Moisturizer

Apply your moisturizer and SPF (if daytime). Can be used 1-3 times daily as tolerated until blemish clears.

06

Who is it for?

WHO

Perfect for you if:

  • You have occasional breakouts or early-stage blemishes
  • You struggle with blackheads and whiteheads
  • You have oily or combination skin
  • You want an affordable, effective spot treatment
  • You prefer fragrance-free, gentle formulas
  • You need a fungal acne-safe option

Consider alternatives if:

  • You have deep, cystic acne (try benzoyl peroxide instead)
  • Your skin is extremely dry or sensitized
  • You're allergic to aspirin or salicylates
  • You're pregnant without doctor approval
  • You need an all-over treatment, not spot treatment
07

Skin type compatibility

SKIN TYPES
Oily Skin
Excellent

Ideal match! Salicylic acid and zinc PCA help control excess oil while clearing pores.

Combination Skin
Excellent

Perfect for targeting oily T-zone blemishes without over-drying other areas.

Acne-Prone Skin
Excellent

Formulated specifically for breakout-prone skin. Non-comedogenic and fungal acne safe.

Normal Skin
Good

Works well for occasional breakouts. Soothing botanicals prevent irritation.

Sensitive Skin
Good

Fragrance-free and contains soothing ingredients. Patch test first; start once daily.

Dry Skin
Moderate

May cause localized dryness. Use sparingly and always follow with moisturizer.

08

Results timeline

WEEK 3-4
Day 1-2

Initial Action

Salicylic acid begins penetrating pores. You may notice slight tingling upon application. Blemish redness may start to reduce.

70% noticed reduced redness
Day 3-5

Visible Reduction

Blemishes begin to shrink and flatten. Whiteheads may come to a head faster. Skin texture improves around treated areas.

85% saw smaller blemishes
Week 1-2

Clearing Phase

Most surface-level blemishes fully cleared. Blackheads become easier to extract or dissolve. Fewer new breakouts appearing.

78% experienced clearer skin
Week 3-4

Prevention Mode

Continued use helps prevent new breakouts. Pores appear smaller and less congested. Overall skin clarity improved.

72% reported fewer new breakouts
09

Ratings by platform

4K+ REVIEWS
Amazon
4.3
Rating
2,000+
Reviews
Main complaint: Small bottle size for the price; some wished for faster results
Ulta Beauty
4.2
Rating
500+
Reviews
Main complaint: Works better on surface blemishes than deep cystic acne
Target
4.4
Rating
300+
Reviews
Main complaint: Gel consistency takes a moment to dry down completely
Bubble Website
4.6
Rating
1,200+
Reviews
Main complaint: Wish it came in a larger size option
10

Pros & cons

BALANCED

Praised

  • Affordable price point ($12) for quality ingredients
  • Gentle yet effective - doesn't over-dry skin
  • Fragrance-free and suitable for sensitive skin
  • Fungal acne safe formulation
  • Works quickly on surface-level blemishes
  • Contains soothing botanical extracts
  • Vegan, cruelty-free, dermatologist-tested
  • Lightweight gel absorbs without residue

Criticized

  • Small bottle size (10ml) doesn't last long
  • Not strong enough for deep cystic acne
  • 1.8% salicylic acid lower than some competitors
  • May cause initial purging in some users
  • Takes 2 minutes to dry completely
  • Some users prefer higher concentration BHA
11

Budget-friendly alternatives (dupes)

DUPES
85% Match
Salicylic Acid 2% Solution
$7.90
Budget Pick

Higher concentration (2% vs 1.8%) in a larger 30ml bottle. Simpler formula without botanicals. More drying but more potent for stubborn acne.

75% Match
BHA Blackhead Power Liquid
$25.00
Similar Price

K-beauty option with 4% betaine salicylate (gentler BHA derivative). Larger 100ml size. Better for all-over use than spot treatment.

70% Match
Acne Control Gel
$15.99
Budget Pick

Contains 2% salicylic acid plus ceramides and niacinamide. Larger 1.35oz size. More hydrating formula, good for dry/sensitive skin.

12

Comparison with competitors

SIDE-BY-SIDE
BHA 9 Treatment
Key Active 2% Salicylic Acid
Size 118ml
Price/ml $0.30/ml
Fragrance-Free Yes
Fungal Acne Safe Yes
Best For All-over treatment
Salicylic Acid 2%
Key Active 2% Salicylic Acid
Size 30ml
Price/ml $0.26/ml
Fragrance-Free Yes
Fungal Acne Safe No
Best For Budget-conscious users

Bubble Fade Away (5% BP)

Key Active 5% Benzoyl Peroxide
Size 10ml
Price/ml $1.20/ml
Fragrance-Free Yes
Fungal Acne Safe Yes
Best For Inflamed, cystic acne
13

Storage & shelf life

12 MONTHS
Period After Opening (PAO)

12 months after opening

Storage

Store in a cool, dry place. Avoid extreme temperatures (below 40°F and above 100°F).

Packaging

Squeeze tube with precision tip for targeted application

Travel Friendly

Yes - 10ml is under TSA liquid limits (3.4oz/100ml)

13

Frequently asked questions

FAQ

Bubble Knock Out contains 1.8% salicylic acid, which is just under the 2% threshold that the American College of Obstetricians and Gynecologists (ACOG) considers safe for topical use during pregnancy. However, because it's close to that limit and salicylic acid is related to aspirin, we recommend consulting your healthcare provider before use during pregnancy or breastfeeding. They can assess your individual situation and advise accordingly.

Yes! Bubble Knock Out is fungal acne safe. The formula is free from ferments, fatty acids (C11-24), oils, and esters that feed malassezia yeast. Additionally, it contains zinc PCA and azelaic acid, both of which have anti-fungal properties that may actually help with fungal acne conditions. This makes it a safe choice for those dealing with malassezia folliculitis.

Use caution when combining with other active ingredients. Since Knock Out contains salicylic acid (BHA), using it with retinol or other AHAs/BHAs may increase irritation and dryness. It's best to alternate days or use them at different times (one in AM, one in PM). Vitamin C can generally be used in the same routine but apply vitamin C first, let it absorb, then apply the spot treatment. Always listen to your skin and reduce frequency if irritation occurs.

Bubble Knock Out works best for oily, combination, and acne-prone skin types. The salicylic acid and zinc PCA help control excess oil while clearing pores. It's also suitable for normal and sensitive skin types due to its fragrance-free formula and soothing botanical extracts. Those with very dry skin should use sparingly and always follow with moisturizer, as BHAs can be drying.

Most users notice initial improvement within 24-48 hours, with reduced redness and smaller blemish size. Full clearing of surface-level blemishes typically occurs within 3-7 days of consistent use. For best results, continue using 1-3 times daily until the blemish clears completely. Note that deeper blemishes may take longer, and some users experience initial purging in the first 1-2 weeks.

Apply Knock Out after cleansing and toning, but before serums and moisturizer. The order is: Cleanser → Toner → Spot Treatment (Knock Out) → Serum → Moisturizer → Sunscreen (AM). Apply only to blemishes, not all over the face, and allow 2 minutes to dry before continuing with your routine. In the AM, always follow with SPF 30+ as salicylic acid increases sun sensitivity.

No, Bubble Knock Out is non-comedogenic with a rating of 1/5. The lightweight gel formula is oil-free and designed specifically for acne-prone skin. In fact, salicylic acid actively works to unclog pores by dissolving the bonds between dead skin cells. The formula contains no pore-clogging ingredients like heavy oils, silicones, or waxes.

Bubble Knock Out has a PAO (Period After Opening) of 12 months. The product should be used within one year of first opening for optimal effectiveness. Store in a cool, dry place away from direct sunlight and extreme temperatures. The 10ml tube typically lasts 2-3 months with regular spot treatment use, depending on frequency and severity of breakouts.

— Skincarisma verdict
4.3 / 5 ★★★★☆

Verdict: Bubble Knock Out is an excellent, affordable spot treatment for those dealing with whiteheads, blackheads, and early-stage blemishes. The gentle yet effective 1.8% salicylic acid formula, combined with soothing botanicals like willow bark and elderberry, makes it suitable for most skin types including sensitive skin. While the small 10ml size may not last long for frequent users, and it's not strong enough for deep cystic acne, its fragrance-free, fungal acne-safe formulation and $12 price point make it a standout choice for teens and adults alike. For inflamed, painful breakouts, consider pairing with Bubble's Fade Away (benzoyl peroxide) treatment.

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 1 ingredient(s):
Citric Acid
brightening Brightening from 4 ingredient(s):
Salicylic Acid Glycerin Azelaic Acid Citric Acid
wound Promotes Wound Healing from 4 ingredient(s):
Glycerin Azelaic Acid Zinc PCA Citric Acid
ache Ache-fighting from 3 ingredient(s):
Salicylic Acid Azelaic Acid Zinc PCA
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
2 1
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
43% 18% 37%

Product ingredient list

Showing first 5 of 16 ingredients
EWG CIR Ingredient Name & Cosmetic Functions Notes
4 B
Salicylic Acid
Skin Conditioning, Masking, Fragrance, Hair Conditioning, Antidandruff Agent, Antiacne Agent, Denaturant, Preservative, Exfoliant, Keratolytic, Corn/Callus/Wart Remover
brightening Brightening
ache Ache-fighting
Pores
1 Unknown
Water
Solvent, Skin Conditioning
1 A
Pentylene Glycol
Solvent, Skin Conditioning
0 Unknown
Sodium Polyacrylate Crosspolymer-1
Emollient, Skin Conditioning
0 Unknown
Gaultheria Procumbens Leaf Extract
Perfuming, Skin Conditioning, Tonic
VIEW ALL INGREDIENTS