Double Action Acne Serum
Double Action Acne Serum
Product Description
A powerful dual-action acne serum combining maximum strength 2% Salicylic Acid with a potent blend of 4% Niacinamide, 3% Lactic Acid, and Azelaic Acid. Clinically tested to clear acne in 1 week while fading post-acne marks and maintaining your skin's moisture barrier with alcohol-free Witch Hazel and Hyaluronic Acid.
β¨ Texture & Feel
Double Action Formula
Clears acne blemishes while allowing skin to heal simultaneously with clearing and healing actives working in tandem.
Maximum Strength BHA
Contains the maximum OTC strength 2% Salicylic Acid that penetrates deep into pores to clear acne in just 1 week.
Post-Acne Mark Fading
Turbo-charged trio of 4% Niacinamide, 3% Lactic Acid, and Azelaic Acid smooths texture and fades post-acne marks.
Non-Stripping Hydration
Alcohol-free Witch Hazel and Hyaluronic Acid maintain moisture barrier while providing soothing, calming sensation.
π‘οΈ Safety & Compatibility
Contains 2% Salicylic Acid. ACOG considers topical products with 2% or less SA generally safe, but consult your healthcare provider before use during pregnancy.
Topical salicylic acid is unlikely to be absorbed into breastmilk. Avoid applying to areas that may contact baby's skin.
Formula contains no ferments, problematic fatty acids, or esters. Salicylic acid and niacinamide are beneficial for fungal acne.
Dermatologist tested and confirmed non-comedogenic. Will not clog pores or cause additional breakouts.
Contains BHA which increases sun sensitivity. Always use SPF 30+ during the day when using this product.
Start with once daily application. If dryness or peeling occurs, reduce to every other day. Patch test recommended.
π¬ Ingredient Breakdown
π§ͺ Salicylic Acid 2% Proven
A beta hydroxy acid (BHA) that penetrates oil-filled pores to dissolve sebum buildup, exfoliate dead skin cells, and reduce inflammation. The maximum OTC concentration for acne treatment.
- FDA Approved: Recognized as an effective OTC acne treatment at 0.5-2% concentration
- Oil-Soluble: Unlike AHAs, BHA penetrates into pores for deep cleaning action
- Anti-Inflammatory: Related to aspirin, helps reduce redness and swelling
β¨ Niacinamide 4% Proven
Vitamin B3 derivative that regulates sebum production, minimizes pore appearance, and fades post-inflammatory hyperpigmentation while strengthening the skin barrier.
- Sebum Control: Clinically shown to reduce oiliness and shine
- Barrier Support: Increases ceramide production for stronger skin
- Brightening: Inhibits melanin transfer to fade dark spots and acne marks
π Lactic Acid 3% Proven
A gentle alpha hydroxy acid (AHA) that exfoliates the skin surface, promotes cell turnover, and provides hydrating benefits thanks to its humectant properties.
- Gentle Exfoliation: Larger molecule size makes it gentler than glycolic acid
- Hydrating: Natural humectant that attracts moisture to skin
- Texture Smoothing: Improves rough, uneven skin texture over time
πΎ Azelaic Acid Undisclosed Proven
A naturally occurring dicarboxylic acid with antibacterial, anti-inflammatory, and tyrosinase-inhibiting properties. Effective for both acne and post-acne marks.
- Antibacterial: Kills acne-causing bacteria on the skin
- Anti-Inflammatory: Reduces redness associated with acne and rosacea
- Brightening: Inhibits tyrosinase to fade hyperpigmentation
πΏ Witch Hazel Extract Proprietary Traditional
Thayers' signature ingredient, sourced from their family farm in Connecticut. Alcohol-free extraction preserves beneficial tannins for soothing, anti-inflammatory benefits.
- Farm-to-Bottle: Certified organic, locally grown in Fairfield County, CT
- 195% More Tannins: Non-distilled process preserves more beneficial compounds
- pH Balancing: Helps restore skin's natural pH after cleansing
π§ Sodium Hyaluronate Undisclosed Proven
A low-molecular-weight form of hyaluronic acid that penetrates skin to provide deep hydration, counteracting the potential drying effects of exfoliating acids.
- Deep Hydration: Can hold up to 1000x its weight in water
- Plumping Effect: Helps skin appear more plump and youthful
- Barrier Support: Prevents moisture loss while acids work
16 ingredients
Active Ingredient: Salicylic Acid 2%
Inactive Ingredients: Water, Glycerin, Niacinamide, Lactic Acid, Sodium Hydroxide, Aloe Barbadensis Leaf Juice, Chlorphenesin, Sodium Hyaluronate, Hamamelis Virginiana (Witch Hazel) Bark/Leaf/Twig Extract, Aloe Barbadensis Leaf Extract, Azelaic Acid, Trisodium Ethylenediamine Disuccinate, Citric Acid, Potassium Sorbate, Sodium Benzoate
π Where It Fits in Your Routine
Apply after cleansing on dry skin. Can be used 1-3 times daily. Start with once daily to assess tolerance.
π How to Use
Cleanse Thoroughly
Start with clean, dry skin. Use a gentle cleanser to remove makeup, dirt, and excess oil.
Apply Thin Layer
Cover the entire affected area with a thin layer of serum. Can also be used as a spot treatment.
Allow to Absorb
Wait for the serum to fully absorb before applying additional skincare products.
Follow with Moisturizer
Apply a lightweight moisturizer to seal in hydration. Use SPF 30+ during daytime.
π€ Who Is It For?
β Perfect for you if:
- You have active acne breakouts or blackheads
- You want to fade post-acne marks and discoloration
- You have oily or combination skin
- You need a non-drying acne treatment
- You prefer fragrance-free, clean formulas
- You have fungal acne (malassezia)
- You want drugstore-accessible, proven actives
β Consider alternatives if:
- You are pregnant (consult doctor first)
- You have very dry or dehydrated skin
- You are already using prescription retinoids
- You have compromised skin barrier or eczema
- You are allergic to aspirin/salicylates
- You need a larger bottle size (this is 1 oz only)
π― Skin Type Compatibility
Ideal match. Salicylic acid and niacinamide control excess oil while treating acne without adding shine.
Works well on T-zone without over-drying cheeks. Hyaluronic acid maintains moisture balance.
Specifically formulated for acne. Non-comedogenic with multiple acne-fighting actives.
Great for occasional breakouts and maintaining clear skin. Use 1-2 times daily as needed.
Contains multiple acids which may irritate. Patch test first and start with once every other day.
May be too drying. If using, follow with rich moisturizer and limit to once daily or less.
π Results Timeline
Immediate Hydration Boost
Skin feels soothed and hydrated thanks to hyaluronic acid and aloe vera. No tight or stripped sensation.
Based on clinical study of 74 participantsVisible Acne Clearing
Clinically tested to clear acne blemishes and improve skin texture. Active breakouts begin to reduce significantly.
Clinically tested resultsPost-Acne Mark Fading
Niacinamide and azelaic acid work to fade hyperpigmentation. Skin tone becomes more even and radiant.
Continued improvement with consistent useTransformed Skin
Maximum benefits achieved with continued use. Clearer skin with reduced acne, faded marks, and improved texture.
Based on 2023 clinical self-evaluation studyβ Ratings by Platform
βοΈ Pros & Cons
β Praised
- Clinically tested with proven results in 1 week
- Non-stripping formula maintains moisture barrier
- Multiple actives target acne from different angles
- Fragrance-free and alcohol-free formulation
- Trusted heritage brand (since 1847)
- Fast-absorbing, lightweight texture
- HSA/FSA eligible purchase
- Fungal acne safe ingredients
β Criticized
- Small 1 oz bottle size for the price
- May cause initial purging period
- Can be drying for very dry skin types
- Not recommended during pregnancy
- Requires sun protection during use
- Some users wish for higher niacinamide %
π° Budget-Friendly Alternatives (Dupes)
Same 2% salicylic acid concentration in a simpler formula. Lacks niacinamide, lactic acid, and azelaic acid. More basic hydration profile.
Cult-favorite BHA toner with 2% salicylic acid and green tea. Toner format vs serum. Lacks niacinamide and azelaic acid but excellent pore penetration.
2% salicylic acid with ceramides for barrier support. Gel texture, includes niacinamide. Different soothing agents but similar acne-fighting approach.
π Comparison with Competitors
Thayers Double Action Acne Serum
$14.99Paula's Choice 2% BHA Liquid
$37.00The Ordinary Salicylic Acid 2%
$6.70CeraVe Acne Control Gel
$16.99π¦ Storage & Shelf Life
12 months after opening
Store in a cool, dry place away from direct sunlight. Room temperature is ideal.
Opaque plastic bottle with pump dispenser for hygienic application
Yes - 1 oz size is TSA-compliant for carry-on luggage
β Frequently Asked Questions
This serum contains 2% salicylic acid. The American College of Obstetricians and Gynecologists (ACOG) considers topical products with 2% or less salicylic acid generally acceptable during pregnancy, but it's best to consult your healthcare provider before use. For breastfeeding, topical salicylic acid is unlikely to be absorbed into breastmilk at significant levels, but avoid applying to areas that may come into direct contact with your baby.
Yes! This serum is fungal acne safe. It contains no ferments, problematic fatty acids (C11-C24), esters, or oils that feed malassezia yeast. The key ingredients - salicylic acid, niacinamide, lactic acid, and azelaic acid - are all beneficial for fungal acne and can help manage the condition.
This serum already contains salicylic acid (BHA) and lactic acid (AHA), so avoid layering additional acid products to prevent over-exfoliation. With retinol, use them on alternating nights or apply retinol at night and this serum in the morning. Vitamin C can be used in the morning before this serum, but watch for irritation. Always introduce new combinations gradually.
This serum is ideal for oily, combination, and acne-prone skin types. The salicylic acid and niacinamide help control excess oil while treating acne. Those with dry or sensitive skin should use caution - start with once every other day and always follow with moisturizer. Not recommended for very dry, eczema-prone, or compromised skin barriers.
Clinical testing shows improved hydration in just 15 minutes and visible acne clearing within 1 week. Post-acne marks typically begin fading around 4 weeks with continued use. Maximum benefits are usually seen after 8 weeks of consistent use. Some users may experience initial purging (temporary increase in breakouts) as the acids work to clear congestion.
Apply after cleansing and toning, but before moisturizer and sunscreen. The order is: Cleanser β Toner (optional) β Thayers Acne Serum β Moisturizer β Sunscreen (AM). Apply to clean, dry skin. Can be used 1-3 times daily, but start with once daily to assess tolerance.
No, this serum is dermatologist-tested and confirmed non-comedogenic. It has a comedogenic rating of 0/5, meaning it will not clog pores. In fact, the salicylic acid actively works to unclog existing pore congestion and prevent new blockages from forming.
The serum has a Period After Opening (PAO) of 12 months. Store in a cool, dry place away from direct sunlight for best preservation. The 1 oz (30ml) bottle typically lasts 4-8 weeks depending on usage frequency and whether you apply to full face or use as spot treatment.
Verdict: Thayers Double Action Acne Serum is an impressive multi-tasking treatment that combines proven acne-fighting ingredients at effective concentrations. The formula stands out for including 4% niacinamide, 3% lactic acid, and azelaic acid alongside the 2% salicylic acid - giving you more bang for your buck compared to single-ingredient alternatives. The alcohol-free, fragrance-free formulation with heritage witch hazel makes it suitable for most skin types, and it's one of the few affordable options that's also fungal acne safe. The main drawback is the small 1 oz bottle size, which may not last long with daily use. Overall, an excellent choice for those seeking a comprehensive, drugstore-accessible acne serum from a trusted American brand with 175+ years of history.
Product Overview
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.
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.
Quick Product Notes
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 Β«promisesΒ» 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.
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
Notable Effects & Ingredients
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.
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!
Ingredients Related to Skin Types
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.
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.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 4 |
Salicylic Acid
Skin Conditioning, Masking, Fragrance, Hair Conditioning, Antidandruff Agent, Antiacne Agent, Denaturant, Preservative, Exfoliant, Keratolytic, Corn/Callus/Wart Remover
|
Pores
|
|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 0 |
Lactic Acid
|
|

