OTC Medicated Shampoo · 1.8% Salicylic Acid

Kadason Seborrheic Dermatitis Shampoo

Kadason Seborrheic Dermatitis Shampoo

Helps relieve the symptoms that keep coming back: itching, flaking, scaling, redness, and irritation.

Rated by verified users (35) · 350,000+ customers worldwide ·
Developed with pharmacists · Made in the USA

Is Kadason right for you?

Kadason is designed for people managing ongoing seborrheic dermatitis or dandruff symptoms. It may be a good fit if:

  • Your current shampoo works for a while, then the flakes and itch come back
  • Harsh anti-dandruff formulas leave your scalp feeling dry, tight, or irritated
  • You want something gentle enough for frequent, even daily, use
  • You avoid oils and silicones because lighter formulas work better for your scalp
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If any of this sounds familiar, you're in the right place.

The shoulder check before a meeting. The black shirts you quietly stopped wearing. The shampoo that worked for three weeks, until it didn't. The itch that starts the moment you have to sit still.

Seborrheic dermatitis, or "seb derm" as most people who live with it call it, is a recurring condition. If you have it, you already know the hardest part isn't any single symptom. It's that they come back.

The itch and irritation

The scalp itch that hijacks your attention, the tenderness when you wash or comb, the irritation that flares with sweat, stress, or season changes.

The flakes and the buildup

Visible flakes on shoulders and hairlines, and underneath them, the stubborn, waxy buildup that ordinary shampoo never quite lifts away.

The redness that stays

Sometimes the flakes calm down and the redness and irritation don't. That lingering inflamed feeling is part of the same condition, and it deserves the same routine.

Why seborrheic dermatitis keeps coming back (and where Kadason fits)

Seborrheic dermatitis tends to move in cycles: flare, treat, calm, stop treating, return. That's not a failure of willpower. It's the nature of the condition. People who manage it well usually stop searching for a one-time fix and build a consistent routine instead.

Kadason was formulated to be the dependable, everyday layer of that routine.

The Active

1.8% salicylic acid, an FDA OTC monograph active for seborrheic dermatitis and dandruff

Salicylic acid is a keratolytic: it helps soften and loosen the scale and flake buildup on the scalp so it can rinse away, instead of sitting where it can keep causing trouble. Used consistently, it helps relieve the symptoms of seborrheic dermatitis and dandruff: itching, flaking, scaling, redness, and irritation.

Scale & buildup
Scale & buildup
Softens & loosens
Softens & loosens
Rinses away
Rinses away
The Base

Oil-free. Silicone-free. On purpose.

Many people managing seborrheic dermatitis choose to keep oils and heavy silicones away from their scalp. An already-oily scalp rarely needs more of either, and residue and buildup are exactly what you're trying to rinse out. Kadason's base is completely free of both: nothing coating the scalp, nothing weighing hair down by mid-afternoon.

Gentle enough to actually use consistently

Consistency is where most routines fail, often because the product is too harsh to stick with. Kadason cleanses with mild, amino-acid-derived agents and supports the scalp with humectants and soothing botanical extracts, so frequent use doesn't have to mean a stripped, tight-feeling scalp.

Nothing that feeds the problem

No oils.
No oils.
No silicones.
No silicones.
No sulfates.
No sulfates.
No parabens.
No parabens.
No added fragrance.
No added fragrance.

Seborrheic dermatitis is associated with Malassezia, a yeast that lives on every scalp and feeds on oils. People managing seb derm learn this early, and they read ingredient lists accordingly. Kadason's answer is subtraction: an oil-free, silicone-free base, gentle amino-acid-derived cleansers, and nothing your scalp doesn't need.

That restraint is what makes frequency possible. Itchy afternoon? Washing again is fine. Kadason is formulated to be gentle enough for daily use, so a second wash on a rough day is not a problem.

Straight answers, because you've heard enough big promises

Kadason is not a cure. Seborrheic dermatitis doesn't currently have one, and any product suggesting otherwise is selling hope, not shampoo.
It isn't an overnight fix. Some people notice changes quickly; for others it takes weeks of consistent use. Results vary, and we won't pretend they don't.
It doesn't replace your doctor. If your condition worsens, doesn't improve after regular use as directed, or covers a large area, see a doctor or dermatologist.

The routine

Consistency matters more than intensity. Use daily, or as directed by a doctor. Kadason is gentle enough that many people use it daily.

Step 1

Wet thoroughly

Wet hair and scalp completely with warm water before applying.

Step 2

Massage into the scalp

Work into a lather with fingertips. The scalp, not just the hair, is the target.

Step 3

Let it work briefly

Allow brief contact time per the label directions, then rinse well.

Step 4

Keep it up

No lather on the first wash? Rinse and repeat. Buildup can block lather until it's cleared.

Made by someone who lives with it

Kadason wasn't dreamed up in a marketing meeting. Its founder lived with seborrheic dermatitis for years: the persistent itch, the visible flakes, the shelf of products that almost worked. Working with pharmacists, he set out to answer one question: what would a shampoo look like if it were designed by someone who actually lives with this?

Kadason is produced in the United States under strict quality and manufacturing standards, with consistency you can count on for a product you'll use week after week, month after month.

350,000+
customers worldwide have made Kadason part of their routine
Made by someone who lives with it

Every ingredient, and why it's there

If you've been managing this condition for a while, you probably read labels. Good. Here's ours.
Active Ingredient
Salicylic Acid 1.8%
Helps relieve symptoms of seborrheic dermatitis and dandruff

Gentle cleansing system

Sodium Lauroyl Methyl Isethionate, Sodium Cocoyl Isethionate, Cocamidopropyl Betaine: mild, amino-acid-derived surfactants chosen for frequently washed, easily irritated scalps.

Hydration support

Glycerin, Propanediol, Butylene Glycol: humectants that help counter the tight, dry feeling associated with medicated shampoos.

Soothing botanicals

Aloe leaf juice, green tea (Camellia sinensis) leaf extract, and licorice-root-derived Dipotassium Glycyrrhizate: selected to support scalp comfort.

What's not in it

No oils. No silicones. No sulfates. No parabens. No added fragrance. Nothing left behind to coat the scalp, build up, or weigh hair down.

Full ingredient list

Water (Aqua), Sodium Lauroyl Methyl Isethionate, Sodium C14-16 Olefin Sulfonate, Sodium Lauroamphoacetate, Alcohol, Cocamidopropyl Betaine, Sodium Cocoyl Isethionate, Propanediol, Butylene Glycol, Camellia Sinensis Leaf Extract, Guar Hydroxypropyltrimonium Chloride, Glycerin, Aloe Barbadensis Leaf Juice, Hydroxyethylcellulose, Aminomethyl Propanol, Tremella Fuciformis (Mushroom) Extract, Polyquaternium-10, Ganoderma Lucidum (Mushroom) Extract, Cocamide MEA, Dipotassium Glycyrrhizate, Bacillus/Glycine Soja (Soybean) Ferment Extract, PEG-120 Methyl Glucose Dioleate, Phenoxyethanol, Ethylhexylglycerin

Drug Facts label
Drug Facts Label

Frequently asked questions

Kadason is formulated to help control symptoms associated with dandruff and seborrheic dermatitis, including itching, flaking, scaling, redness, and scalp irritation.

Both. The active ingredient, salicylic acid, is FDA-approved to control the symptoms of both dandruff and seborrheic dermatitis.

Yes, Kadason is formulated to meet FDA OTC standards. It uses an FDA-approved active ingredient (1.8% salicylic acid) at the strength specified in the FDA anti-dandruff monograph to ensure safety and effectiveness.

A good shampoo needs two parts: an active ingredient that controls symptoms (like salicylic acid) and a base that doesn't feed the problem. Because seborrheic dermatitis is associated with Malassezia yeast that feeds on oils, a good formula should be oil-free, silicone-free, and gentle enough to avoid dry scalp irritation.

It can if it's too harsh. Many medicated shampoos use strong cleansers that strip the scalp of all moisture, leading to a tight, dry feeling. Kadason is formulated with mild, amino-acid-derived cleansing agents and humectants (like glycerin and propanediol) to support moisture while the active ingredient does its work.

Malassezia, the yeast associated with seborrheic dermatitis, feeds on lipids (oils). Applying shampoos, conditioners, or oils that coat the scalp can feed this yeast and prolong flaking and itching. Kadason is formulated entirely oil-free to avoid feeding the problem.

Yes. Many users rotate Kadason with shampoos containing other actives (like ketoconazole, selenium sulfide, or zinc pyrithione) if their doctor recommends it. However, Kadason is designed to be gentle enough to be your daily or primary shampoo on its own.

For best results, use at least twice a week or as directed by a doctor. Because Kadason uses a gentle, oil-free, amino-acid base, it is safe and gentle enough to use every day if you prefer to wash your hair daily.

Yes. Unlike harsh medicated shampoos that dry out the scalp with a second wash, Kadason's mild, silicone-free formula won't strip or irritate your scalp, making a second wash on a rough day perfectly fine.

Wet hair and scalp completely. Apply shampoo, massage gently into the scalp with your fingertips (avoid using nails), and work into a lather. Allow brief contact time for the active ingredient to work, then rinse thoroughly. If you have significant buildup, rinse and repeat.

Some users notice a difference in itching and flaking within the first few washes, while for others it may take a few weeks of consistent use. Because seborrheic dermatitis is a chronic, recurring condition, consistent routine use is key to long-term management.

Temporary hair shedding can sometimes occur if a heavily inflamed scalp is left unmanaged or if you scratch frequently. By controlling the itch, redness, and buildup, Kadason helps support a healthier scalp environment. If you experience persistent hair loss, please consult a doctor.

Yes, but make sure to use an oil-free, silicone-free conditioner, or apply regular conditioner only to the mid-lengths and ends of your hair, keeping it off the scalp so it doesn't leave oily residues that feed yeast.

Kadason is formulated without harsh sulfates, making it gentler on color-treated hair than standard medicated shampoos. However, as with any active medicated shampoo, we recommend checking with your stylist or doing a patch test if you have recently colored or chemically treated hair.

Stop use and ask a doctor if your condition worsens, does not improve after regular use as directed, or if irritation, redness, or swelling occurs. If your symptoms cover a very large area of the body, consult a healthcare provider.

Ready when you are

Kadason won't promise you a miracle. It offers something this condition actually responds to: a well-formulated, federally regulated shampoo you can use consistently, and keep using.

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