Locks of Hair
Clip In Hair Extensions - Straight Seamless - Medium Brown (4)
Clip In Hair Extensions - Straight Seamless - Medium Brown (4)
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Neutral #4 Brown With Built-In Depth
The medium brown shade has balanced warm and cool pigments that prevent that single-note flatness you get from box-dye brown. Light hits these strands and you see subtle tonal variation, the kind of dimension that normally takes lowlights at a salon to achieve.
Seamless Construction Designed for Thin Hair
Silicone-encased wefts compress to a nearly invisible profile against the scalp, which solves the raised-ridge problem standard fabric tracks create on fine or low-density hair. If every added layer shows through at your root line, this is the construction you want.
Cuticle-Intact Virgin Fiber
Professional coloring to #4 was applied to strands that still have their original cuticle structure and cortex protein density. That preserves natural elasticity and lets the hair bounce back to straight after curling, braiding, or pinning.
Permanent Shade With No Fade Cycle
The non-absorbent silicone base shields the weft from shampoo sulfates, mineral deposits, and UV light that gradually warm brown shades toward copper. So the #4 tone holds steady through months of wear without requiring Remy-quality color refreshing.
Modular Nine-Piece Versatility
Two 3-inch wefts add density at the temples where hair typically thins first, while the larger 9-inch pieces fill in the occipital area. You choose how many pieces go in based on whether the day calls for subtle reinforcement or a full transformation.
All-Day Wear Without Scalp Fatigue
Three clips per weft spreading across the full track width distributes tension laterally instead of concentrating it at one or two pressure points. That's why 160 grams across nine seamless pieces feels lighter than a 120-gram set on fewer, bulkier wefts.
Updo-Compatible Flat Profile
The silicone band adds so little bulk that ponytails, low buns, and braided styles sit smoothly over the attachment point. No lumpy silhouette that gives away traditional clip-ins the moment your hair gets pulled back. You can actually style up with these.
| Feature | Details |
|---|---|
| Hair Type | 100% Human Hair |
| Texture | Straight |
| Color | Medium Brown #4 |
| Length | 20" |
| Weight | 160 grams |
| Grade | Virgin Hair |
| Pieces | 9 seamless wefts (2x9", 3x7", 2x5", 2x3") |
| Attachment | Three clips per weft |
| Base Type | Silicone (cannot be dyed) |
Medium brown #4 is the shade people forget about because it's not dramatic. It's not jet black. It's not blonde. It's not auburn. It's just... brown. And that's exactly why it works. More people have medium brown hair than any other shade, and finding extensions that match without pulling too warm, too cool, or too dark is the actual challenge.
Why Medium Brown Is the Hardest Color to Match
Blonde extensions are forgiving because they're meant to stand out. Black extensions disappear into dark hair. But medium brown sits in the middle where a half-shade off is visible. Too warm and it looks red-tinted. Too cool and it looks ashy against warm-toned skin. Too dark and you've got an obvious line where extensions start.
If your natural hair has highlights or dimensional color, medium brown clip-ins actually blend better than you'd expect. The solid #4 shade sits between your lighter and darker strands, visually averaging out with the rest of your hair. It's less noticeable than a highlighted extension that's trying (and failing) to match your exact highlight pattern.
The Everyday Use Case
This is the shade for people who want their extensions to be invisible. Not a color change, not a highlight effect, just more of their own hair.
Most of the seamless color variants get used as accent pieces or statement looks. Medium brown gets used five days a week by people who just want their hair to look thicker for work, for running errands, for their regular life. If that's your goal, understanding how extensions work for thin hair helps you get the most natural result from every piece. It's the least glamorous and the most practical shade in the lineup. For daily wearers, the clip-in care schedule, like washing every 15 to 20 wears and making sure they're bone-dry before storing, prevents the buildup and mold issues that sneak up on extensions worn this frequently.
Care for Medium Brown Specifically
The main thing to watch for with medium brown is product buildup making the hair look darker than it is. Use lightweight products and a clarifying wash every few weeks to keep the #4 reading as true medium brown. If your natural hair is on the finer side, choosing thinner wefts and single-drawn hair prevents that too-thick look where the extensions have more body than your bio hair. Fewer styling decisions than the other seamless colors, because medium brown is the one where you just clip them in and walk out the door. For an even faster daily routine, some people alternate between clip-ins and halo wire extensions depending on how much time they have in the morning.
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