Supplies Metallic Paint, Shimmer/glitter, and gloss for faceup and nails

Mica powder (for shimmer) and fine glitter should be able to be found from nail art suppliers, I believe. There might be bjd dealers who sell some, but the one I bought mine from no longer exists. You'll want it loose so you can mix it with an acrylic gloss at the intensity you want. At least that's what most people I've seen do.

Volks sells acrylic gloss, just be aware that it can leech the color of any water-based paint you use, such as watercolor pencil and I've found even the pastels I use if there's not a lot of layers of sealant in between, if that happens to be what you're using. I wound up switching to using acrylic paint on the places I want to gloss just to be safe. (I like using the least amount of layers in between as possible.)

And lastly, there are metallic acrylic paints which theoretically should be safe since they're acrylic and not oil-based, but I've never used them before. Someone else might be able to chime in on those.

 

For metallic paints, I use finetec/coliro watercolours in their pearlescent line. They’ve got more than enough shine for what I need, if I gloss over them after I seal them with MSC, because the matte sealant dulls them all down.

For shimmers, I use a pack of pearl-ex mica powders. I go through a lot of the interference colours, because they give a subtle coloured shimmer rather than changing the colour of whatever you brush them on top of.

 

Also recommending mica powder for shimmer.

For gloss, I have always liked Winsor Newton Galeria Gloss Varnish.

Citadel also has a bunch of metallic acrylic paints, this is the brand you can find at Warhammer shops or other hobby shops that sell these. I find these to be the best metallics for tiny areas since they're meant to be used on miniatures. Citadel has a gloss which I've bought but haven't used yet (of course I managed to find the WN Galeria right after I got it).

 

I'll also suggest mica powders for shimmer. You can find them on amazon under soap making supplies, since they're often used for coloring soap, though you can also find them from actual soap making suppliers. Dice makers also often use them. If you want a variety of colors to use, I'd suggest those, since pearl-ex has more limited offerings for the costs, and a little goes a long way. The nice part about mica powders, is that you can mix them with a gloss medium to make your own shimmery or metallic paints. I've done that to ink dice before and it works really well.

Citadel paints has a wide variety of colors that are all named after lore specific things for their mini lines, so suggesting specific ones can be a bit tricky. There's not just a basic "silver" or "gold" for example, so if you have a specific color in mind, you'll want to check out the range to see which might work best, and probably ignore the names at first. You'll want to look at the paints in the "Layer" line, since they're meant to be used for details more than the base line and their other lines are for specific effects. I will warn that depending on where you're located, if you're buying from Games Workshop's site, their shipping can be less than ideal, and their website isn't always reliable for what is actually in stock or not. If you can, I'd suggest buying them from a local game store.
A similar company is Army Painter, which has a few different lines of different types of acrylic paints for mini painting and for various effects. My husband has had better luck with the Army Painter metallics staying metallic after being sealed than Citadel's, but it may depend on which sealant you use. He's tried a few different sealants, but not MSC. They're also usually available at local game shops, as well as on their own website or through amazon. We've never had problems with their shipping or stocking accuracy.

For gloss, I use Sculpy gloss glaze. The Sculpy gloss glaze can be a bit more of a satin finish in lighter coats, which I prefer personally. It can also be thinned some with water to make it more satin too, though I haven't needed to try that yet.

 

Someone else already responded with part of what I was going to say. @quilleth is right, they all have names after something else. I just looked to see if GW's online shop has a way to sort by metallics, and annoying they do not. In the stores they are grouped together and this webshop seems to have them all listed out as well.

The stores have been popping up everywhere so might be worth seeing if there's one nearby if these paints interest you.

 

i love Tamiya clear gloss for my garage kit faceups, its quality and i think it would work well for lip glosses though i haven't had a chance to try it myself yet [edit to add] you cant put Tamiya over acrylics though you need a layer of sealant in between i use msc

 

I use predominantly Tamiya glosses as I’ve found them the most stable.
What I mean by that is a few years back I decided to give MH repainting a try and thought it’d be fine to just use the same materials I use on my bjd. I found out the hard way that many glosses and varnishes that work fine on resin do not cure or are unstable on vinyl!
Make sure it says acrylic varnish though whatever brand you buy as there are different kinds for use with different mediums.

 

Yep! Though how strong they end up looking could vary depending on the various pigments used in the micas, and sometimes the colors will look different in their jar or packet and used dry (like pastels) to how they do mixed with a liquid. I haven't tried it with dolls yet except using the dry micas for blushing, so I'm not sure how much of the shimmer and metallic property they'd retain when mixed with gloss and then sprayed with matte sealant, but since they kept their shimmer from the blushing I did, I imagine they'll hold up pretty well. And if you mix it with gloss sealant, technically you don't need to spray it after if that's the last step in your process, since it'll already be sealed.

 

I use Mr Color GX 100 acrylic gloss (I'm in Australia, so I use mostly Asian paint supplies as the postage is more affordable) and tested it over MSC-sealed watercolour paint (Kuretake Gansai Tambi) yesterday after what @cosmicakes said about Volks acrylic gloss and thankfully it didn't leach any colour from my test piece.
Thank you for reminding me to test gloss/paint interactions!

I've also been using Kuretake metallic watercolours diluted and/or sponged to the shimmer I need, as well as Volks's Pearl Shine powder. A little bit with shiny stuff goes a long way!

 

Liquitex also makes a Gloss Varnish! I use it with Liquitex Matte Varnish and they work together well (plus even the smallest bottle lasts forever)

 

Mr Hobby has a nice range of subtle pearlescent colours (Mr Crystal Color series) as well as metallics that can be thinned down with a thinner. I second the use of Mr Color GX gloss.