Kōv makes the french pin in two materials, metal (gold and silver) and cellulose acetate (tortoise, oak, honey, black). They hold the same way. They don't look or feel the same way, and once you know what actually separates them, the choice gets a lot easier.
Quick tip: if you're buying your first french pin, acetate is usually the more forgiving starting point, more grip, more forgiving of imperfect technique. Once you've got the motion down, a metal pin is an easy, elevated add-on.
The Real Difference Isn't Looks, It's Grip
Acetate has more texture and a slightly wider prong surface, so it grips hair a little more readily, especially on second-day hair or hair with some texture already in it. Metal is smoother and sits flatter against the head, which means slightly less inherent grip, but a cleaner, lower-profile finish once it's in.
More texture in the material means more forgiveness in the technique. Less texture means a sleeker result once you've got it right.
When Acetate Is the Better Pick
Acetate is the better choice for thicker or coarser hair, where the extra grip actually matters, and for anyone still building confidence with the twist-and-pin motion. It also carries more visual weight and warmth, tortoise and oak in particular read rich against most hair colors rather than disappearing into them.
When Metal Is the Better Pick
Metal is the better choice for finer or silkier hair, where a slimmer prong causes less visible gap or bulk, and for anyone who wants the pin to read as jewelry as much as function. It's also the pick for polished, low-key occasions, work, dinner, anywhere you want the finish to be quiet rather than a focal point.
What About Hold Through the Day?
Both materials hold equally well once properly inserted, the difference is entirely in how forgiving each one is on the way there. A slightly loose twist secured with acetate will often still hold. The same loose twist secured with metal is more likely to need a redo. Neither is better, they just ask different things of you at the insertion step.
A Few Questions We Hear a Lot
Which one should I buy if I'm new to french pins?
Acetate. The extra grip means more of your early attempts will actually hold, which makes the whole thing feel easier while you're learning.
Can I own both?
Most people who own one eventually own both, acetate for everyday and thicker styling, metal for anything more polished. They solve slightly different moments rather than competing for the same one.
Does metal work on thick hair at all?
Yes, it just asks for a slightly firmer twist before you insert it. If your hair is very thick or coarse, acetate will still be the easier starting point.
Is one more durable than the other?
Both are built to last with normal daily wear. Acetate resists yellowing and cracking over time; metal is finished to resist tarnish. Neither is the "sturdier" choice, they age differently, not worse.