Matte lipstick formulation is a structural problem. The finish comes from a wax blend that sets hard, the matte look comes from silica or another mattifying powder, and the comfort comes from the small amount of oil that remains. Push the wax and powder up and the lipstick lasts but feels like chalk; push the oil up and it feels lovely and transfers onto everything.
1. The wax blend
A matte bullet is typically 15 to 25 percent wax: a hard wax for structure, a soft wax for glide, and a small amount of a microcrystalline wax for adhesion. Candelilla and carnauba raise the melting point and the hardness; a synthetic wax gives a smoother surface. A bullet that snaps is over-waxed; one that leans in the tube is under-waxed.
2. The mattifying powder
Silica microspheres at 3 to 8 percent absorb oil and produce the flat finish. Above 8 percent the lipstick feels dry and emphasises lip lines. A blend of silica with a small amount of a soft-focus powder gives a matte finish that photographs well without the chalk. Some formulas use a clay instead of silica, which is cheaper and less comfortable.
3. Particle size and the dry feel
The dry feel is caused by powder particles large enough to be felt on the lip, and by a film that does not flex. Milling the pigment and the silica to under 15 microns, and adding 2 to 4 percent of a soft ester, transforms the same matte finish into something comfortable. A mattifying powder at 6 percent with a fine particle size outperforms 10 percent of a coarse one on both comfort and appearance.
4. Pigment and dispersion
A matte bullet carries 8 to 15 percent pigment, higher than a cream lipstick, because the matte surface scatters light and dulls the colour. Dispersion has to be complete or the bullet shows streaks and the colour varies between batches. A three-roll mill pass with a defined gap and a dispersion check under a microscope is the standard control.
5. Wear and transfer
Matte lipsticks are sold on longevity, so the test has to match the claim. Apply the bullet to a defined area, press a paper disc at fixed pressure at 1, 2, 4 and 6 hours, and measure transfer and colour retention. A matte that transfers more than 20 percent in the first two hours has a wax and oil imbalance. A matte that transfers nothing but flakes at hour five has too much powder.
6. Shade development and the bullet surface
Matte shades read darker than cream shades at the same pigment load, which is why a shade developed in a cream base looks different when the base is matted. Develop the shade in the final base. The bullet surface also matters commercially: a soft, slightly satin top sells better than a fully matte one, because the customer judges the product by the bullet rather than by the swatch.
7. Commercial profile
Matte bullet, 4 g, MOQ 2,000 units per shade, 30 to 40 days. See the lip makeup range and the gloss guide for the finish at the other end of the spectrum.
