this must be washed off?

No. It’s meant to be left on, like a toner. It is very slightly sticky when used at full strength- I dilute it 50% with purified water because it’s very concentrated & a little strong for my sensitive skin. When diluted it’s not sticky. I just mix half & half in a small cup, dip a cotton pad & swipe it on.

Does it have to be washed off daily? I have dreads, and can’t wash my hair for weeks at a time.

If you leave it in, your hair around the scalp area may look greasy but it won't feel greasy. It will feel coated. I leave it on for about 2 hours before washing my hair and I wash my hair with a dandruff shampoo. The dandruff shampoo. by itself, doesn't work half as well as using it in tandem with Dermazen.

Can I use this serum on my scalp during the day or will it make my hair oily?

It doesn’t make it oily feeling. It is more like hair gel looking when it dries. It would feel or look about if you had salt water in your hair after a day at the beach. If I need to wear it, I use it overnight and wash in the am. Or I brush it to slick it back into a ponytail. But no, oily isn’t the word. And remember it only goes on the scalp, you don’t need it to go all the way down your hair.

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Dermazen Overnight Calming Serum for Flaky, Itchy Scalp & Skin 8oz

Product ID: 740322430

Details

Product benefits
Soothing
Scent
Tea Tree and
Skin type
Sensitive
Special ingredients
Hyaluronic
Use for
Face

🌿Steroid & paraben free

💧Hyaluronic acid hydration

🧪92% clinical efficacy

Description

🌙 Wake up flake-free and fearless with Dermazen Overnight Calming Serum!

CLEAN GENTLE FORMULA - Free from steroids, sulfates, parabens, and harsh oils—perfect for sensitive, reactive skin and color-treated hair.
CLINICALLY PROVEN CALM - 92% of users saw a flake-free, soothed scalp—science-backed relief you can trust.
POWERFUL NATURAL INGREDIENTS - Infused with Dead Sea Salt, Niacinamide, MSM, and Tea Tree Oil for targeted anti-flake and anti-itch action.
DERMATOLOGIST RECOMMENDED RITUAL - Pairs seamlessly with Dermazen’s scalp care line for a complete, steroid-free skin therapy experience.
DOUBLE THE SUPPLY DOUBLE THE SAVINGS - 8oz bottle offers a 2-month supply at a better price per ounce—fewer reorders, more peace of mind.

Dermazen Overnight Calming Serum is a dermatologist-tested, steroid-free treatment designed to visibly reduce flaking and soothe itchy, sensitive skin prone to seborrheic dermatitis. Featuring a clinically studied formula with Dead Sea Salt, Niacinamide, Hyaluronic Acid, and MSM, this 8oz serum delivers a 2-month supply of gentle, natural relief safe for daily use on scalp, face, and body—even color-treated hair.

Specifications

ASIN	B0B8TB9VV4
ASIN	B0B8TB9VV4
Active Ingredients	Purified water, sea salt, colloidal silver, xylitol, methylsulfonylmethane (MSM), urea, niacinamide (vitamin B3), hyaluronic acid, 200x aloe vera, grapefruit seed extract, tea tree (melaleuca alternifolia) essential oil, rosemary (rosmarinus officinalis) essential oil
Brand Name	Dermazen
Customer Reviews	3.9 3.9 out of 5 stars (27)
Customer reviews	3.9 3.9 out of 5 stars (27)
Date First Available	24 June 2025
Item Form	Drop
Item Highlight	Steroid-free, Clinically Tested, Reduce Visible Flaking, Soothe Itch & Irritation for Seborrheic Dermatitis-Prone Skin Types
Item Weight	8 Ounces
Manufacturer	Dermazen
Manufacturer	Dermazen
Material Features	Natural
Material Type Free	Paraben Free, Phthalate Free, Sodium Lauryl Sulfate Free, Steroid Free, Sulfate Free
Number of Items	1
Package Dimensions	20.32 x 12.7 x 10.16 cm; 226.8 g
Product Benefits	Soothing
Recommended Uses For Product	Soothing
Scent Name	Tea Tree and Rosemary
Skin Type	Sensitive
Special Ingredients	Hyaluronic Acid
Target Use Body Part	Face
UPC	643950248483
Unit Count	8.00 Milliliters

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