AMERICAN CREW Undetectable Men’s Hair Color — 004 Medium Brown Demi-Permanent, Ammonia-Free, 5-Minute Gray Blending

American Crew Undetectable is a demi-permanent, ammonia-free men’s hair color that blends gray seamlessly in 5 minutes for a natural, salon-quality finish.

Designed by barbers and professional stylists, this targeted hair dye tones gray without obvious regrowth lines or brassiness. The formula is demi-permanent, so it deposits color that fades evenly over time rather than creating stark roots. Enriched with Panthenol (Pro-Vitamin B5), it helps hair feel softer and appear hydrated after application. A precision brush applicator gives control for quick touch-ups on the scalp, beard, and mustache.

How quickly will I see results?

You can expect visible, blended color in about 5 minutes when you follow the mixing and application instructions. Because it’s a demi-permanent dye, the shade sets fast and tones gray without heavy buildup.

• Development time: approximately 5 minutes
• Fast application with included precision brush
• No prolonged processing—ideal for quick at-home touch-ups

Will it look natural or show obvious roots?

The formula is created to produce an undetectable result: grays are blended into your base shade so regrowth appears soft rather than stark. The ammonia-free chemistry reduces the chance of sharp root lines and brassiness as the color fades.

• Demi-permanent fade for gradual, even loss of tone
• Ammonia-free to minimize harsh lift and sharp regrowth lines
• Developed by barbers for realistic, lived-in looks

Is it gentle on hair and suitable for facial hair?

Yes — the product is formulated without ammonia and includes Panthenol to help maintain softness and hydration. The precision brush makes it easy to target hairlines, beards, and mustaches without over-applying.

• Panthenol-enriched for a softer texture after coloring
• Ammonia-free to reduce scalp and hair fiber stress
• Brush applicator for accurate beard and mustache coverage

How do I apply it for best results?

Mix the color and developer as directed, then use the precision applicator to target gray areas. Leave the product on for the recommended 5 minutes, then rinse and shampoo to reveal a blended, natural-looking finish.

• Mix color + developer according to package instructions
• Apply with the included precision brush for control
• Process ~5 minutes, then shampoo out for natural blending

Who is this for: American Crew Undetectable is a good fit for men who want discreet gray blending without the commitment of permanent color. It suits men seeking quick at-home maintenance, those who prefer barber-formulated products, and anyone who wants a softer, hydrated finish on scalp or facial hair. Ideal if you want professional-style, natural-looking coverage with minimal effort.

Ingredients

Aqua/Water/Eau Hydrogen Peroxide, Cetearyl Alcohol, Acrylates/Steareth-20 Itaconate Copolymer, Ceteareth-23, Ceteareth-60, Cetyl Alcohol, Phosphoric Acid, Sodium Stannate, Tetrasodium Etidronate, Methylparaben. B03136