Brassager brass darkening solution bottles, full-size lineup

Brassager Darkening Solution

Price range: $4.00 through $62.00

Darkens brass, copper, and bronze to an authentic antique patina.

- Easy to apply, no dimensional change
- Gradual color change gives you full control over the finish
- Works on furniture hardware, décor, jewelry, and restoration projects

Brand

Size

Clear

Ships from Brassager USA
Sold By Brassager
Returns 30-day refund/replacement

Description

Brassager Brass Darkening Solution — also known as Brass Ager — is a pre-mixed, ready-to-use formula that ages brass, copper, bronze, and tin to a rich, authentic antique patina.

Simply apply it to your brass, copper, or bronze piece and watch the transformation happen in minutes. The gradual color change gives you full control over the finish, from a light aged tone to a deep, dark patina — with no dimensional change to your piece.

Perfect for furniture hardware, jewelry, home décor, and restoration projects, Brassager Darkening Solution is a go-to for DIY enthusiasts, craftsmen, and antique dealers looking to replace dull, shiny brass with a genuine aged finish.

Available in 2oz, 8oz, 32oz, and Gallon sizes.

Want to see it in action first? Watch our quick how-to video showing the darkening process from start to finish.

Additional information

Brand	Brass Ager Solution, Brass Darkening Solution
Size	2oz, 8oz, 32oz, Gal
What's included	Gloves
Before you Start	Work in a well-ventilated space and keep gloves on throughout. In case of skin or eye contact, flush immediately with water.
Prepping the metal	Brassager only bonds with bare metal — any lacquer, plating, or clear coat needs to come off first (acetone or a stripping agent will handle that). Scuff the surface with #0000 steel wool Wipe it down thoroughly with acetone and a clean paper towel Handle it with clean hands from here — oil from your fingers will interfere with an even finish
Applying the solution	Small pieces: Pour Brassager into a plastic container Submerge the item fully Hold for roughly 30 seconds Lift it out and check the color against what you're going for Larger pieces: Pour a working amount into a bowl, then either brush it on or soak the piece until the brown tone develops.
Sizing guide	2–8 oz — jewelry, cabinet hardware, buckles, small screws, keyhole covers 32 oz — mid-size pieces like firearm parts or ceiling fan components 1 gallon+ — larger-scale work: sheet metal, trim, marine hardware
Dialing in the finish	Rinse with water once you've hit the color you want. To lighten it back down, buff gently with dry #0000 steel wool until you land on the exact shade you're after.
If it fades	Patina can soften over time with wear or exposure — just repeat the same application process to refresh it.
Storage & shelf life	Properly stored, Brassager holds for 2–5 years. Pour any unused solution back into its original bottle after use Keep it between 60°F–80°F, away from freezing temps or excessive heat
Important	Brassager won't react with lacquered, brass-plated, or nickel-plated surfaces. The metal has to be fully bare for the solution to work.

Safety Data Sheets (SDS)

Download the official Safety Data Sheet for this item below:

Download SDS PDF

Want to understand what an SDS covers? Learn more here.