A mirror is an optical part in a plastic housing
An LED makeup mirror is bought for how a face looks in it, and that is decided by three things that never appear on a quotation: the coating on the glass, the flatness of the glass, and the colour rendering of the LEDs.
The housing — the part the factory actually moulds — is the easy half. The reason these products get returned is almost always optical or electrical: a mirror that distorts, a light that makes foundation look grey, a hinge that will not hold the lid up.
Mirror: coating and flatness
| Parameter | Typical specification | Failure if missed |
|---|---|---|
| Glass thickness | 3 mm standard, 5 mm premium | 2 mm flexes and distorts in a folding frame |
| Coating | Silvered, copper-free, with passivation | Cheap aluminium coating darkens at the edges within a year |
| Edge sealing | Sealed and painted | Moisture creeps under the coating in a bathroom |
| Flatness | Under 0.3 mm deviation across the diagonal | Wavy reflection, most visible at 5× |
| Reflectance | 92–96 % for silver | Below 90 % the mirror looks grey |
Two procurement points. Copper-free silver with passivation is the specification to write; "silver mirror" alone allows a copper layer that fails the salt-spray test. And edge sealing is not cosmetic — an unsealed edge in a bathroom mirror is where every failure starts, because moisture reaches the silver from the rim inward.
Magnification is a distance, not a number
A 5× mirror is not "stronger" than a 3× one; it is a different working distance. The relationship is fixed: the higher the magnification, the closer the face has to be, and the smaller the usable area.
| Magnification | Working distance | Practical mirror face | Use |
|---|---|---|---|
| 1× | Any | Full frame | Overall view, blending |
| 3× | About 250 mm | 120–150 mm | General detail |
| 5× | About 150 mm | 100–130 mm | Eye makeup, brows |
| 7× | About 100 mm | 80–100 mm | Liner, tweezers |
| 10× | About 70 mm | 60–80 mm | Individual lashes |
A 10× insert smaller than 60 mm is unusable — the user cannot get both eyes in frame. If a product page claims 10× on a 50 mm spot, the number is decoration. Specify magnification and insert diameter together, and check that the two mirrors in a tri-fold are the same optical grade; mixing a 1× silver with a 5× aluminised insert produces a visible colour difference between the two halves.
LED: CRI is the specification nobody writes down
This is where most cheap mirrors fail, and it is measurable.
- CRI (Ra) should be 90 or higher, with R9 above 50. Below Ra 85, reds and skin tones desaturate and makeup looks wrong under the light and right in daylight — the single most common complaint.
- CCT — 3000 K, 4000 K and 6500 K in a three-colour product; check the actual measured CCT, not the label, because a 6500 K strip that measures 7200 K reads blue.
- Uniformity — the ratio of the brightest to dimmest point across the mirror face should be within 1.5:1. A single edge-lit strip gives a bright band at the top and a dark chin.
- Lumen maintenance — 70 % of initial output at 6,000 hours is a reasonable claim for a mid-market product; ask for the LM-80 data if the supplier quotes 25,000 hours.
Electrically, a USB-powered mirror is a 5 V DC luminaire with a lithium cell in some models. That pulls in EN 60598-1 and EN 55015 for the EU, UL 153 (portable luminaire) or UL 962 for the US depending on construction, and the UN 38.3 transport rules for any built-in cell. Ask which standard the report covers — "CE certified" on a mirror usually means EMC only, which is not the same thing.
Anti-fog, wall mounts and bathrooms
An anti-fog mirror adds a PET heater film behind the glass, usually 12 V, drawing 8–15 W for a 200 × 300 mm area. Three things to specify:
- Heat-up time — 3–5 minutes to clear is normal; anything claiming instant is using a much higher wattage and needs a thermal cut-out.
- Adhesive — the film is bonded to the glass back; a pressure-sensitive adhesive that fails at 50 °C will lift in a steamy bathroom.
- IP rating — IP44 minimum for a bathroom, and the rating applies to the assembled product, not the LED strip.
A wall-mounted folding arm carries the entire mirror weight on two screws and a hinge; polycarbonate is the safer choice for that bracket because it fails by bending rather than shattering. Specify the bracket load at 3× the product weight, and check the wall-plug type matches the destination market — a hollow-wall plug in a tiled bathroom is the wrong answer regardless of how good the hinge is.
Housing: ABS, PC and hinge torque
The housing is where the plastics buyer earns their margin.
- ABS for the general body: 2.0–2.5 mm wall, good finish, easy to plate.
- Polycarbonate/ABS blend near the LED and the battery: polycarbonate adds heat and impact resistance where ABS alone softens.
- Soft-touch TPE overmould on the tray or base: 0.8–1.2 mm, bonded in the same tool if possible.
Hinge torque for a folding or tilting mirror: 0.4–0.8 N·m holds a lid in place without feeling stiff. Below 0.3 N·m the lid drops during use; above 1.0 N·m the user feels they will break it. Cycle it 10,000 times and re-measure — a hinge that starts at 0.6 and ends at 0.2 has failed even though nothing cracked.
Plating and paint: chrome on ABS or polycarbonate needs a proper copper-nickel-chrome stack, and the acceptance is 48 hours of salt spray without red rust. Painted finishes need a rub test — 500 g, 100 cycles — plus cross-hatch adhesion at 4B.
Test schedule
| Test | Method | Acceptance |
|---|---|---|
| Mirror flatness | Straight edge or optical flat | Under 0.3 mm across the diagonal |
| Reflection colour | Compare insert vs main mirror | No visible CCT shift between panels |
| CRI / CCT | Spectrometer at three points | Ra ≥ 90, CCT within ±200 K |
| Uniformity | Luminance at nine points | Max/min under 1.5:1 |
| Hinge cycling | 10,000 open/close | Torque above 0.3 N·m at the end |
| Drop | 1.2 m, six faces, retail pack | No glass chip, LED still lit, polycarbonate parts uncracked |
| Salt spray | ASTM B117, 48 h on plated parts | No red rust |
| IP | IP44 for bathroom models | Per IEC 60529 |
| Thermal | 40 °C ambient, 24 h lit | No discolouration, no adhesive lift |
The drop test is the one that finds real problems — a mirror is heavy, glass is brittle, and the housing corners are what hits the floor. Test in the retail pack, because the pack is what the courier drops.
RFQ checklist
- Mirror type: 1×, 3×, 5×, 7× or 10×, with insert diameter for each.
- Glass thickness, coating type (copper-free silver), edge sealing method.
- LED: CRI target, CCT options, count and placement, uniformity requirement.
- Power: USB 5 V, mains adapter, or battery; capacity if battery.
- Safety standard and market (EN 60598 / UL 153 / UL 962).
- Anti-fog: yes or no, wattage, heat-up time, IP rating.
- Housing material per part, wall thickness, finish (plating or paint) with test target.
- Hinge torque and cycle life.
- Mounting method and load rating for wall models.
- Packaging drop standard and retail pack construction.
A makeup mirror sells on how a face looks, and returns on how the light and the glass behave after six months. Both are specified before the tool is cut, and neither is visible in a product photo.
Related product categories
The materials and part types discussed above are grouped in our sourcing directory:
