Gloss Drops suits anyone dealing with frizz or dullness who wants a fast finishing step rather than a leave-in treatment - it's a consumer, at-home product, easy for a first-time serum user since dosing is just a couple of drops.

It works across hair types, but the brand specifically calls out thick or coarse hair as able to use it as a pre-blow-dry primer on damp hair, in addition to its main role as a dry-hair finishing serum.

Gloss Drops earns its place as a last step rather than a core treatment: because it's so concentrated, it adds visible shine and knocks down flyaways without the weight or residue you'd get from a heavier serum or oil applied at the same dose. That makes it useful as a quick finishing touch after styling, or layered into a blow-dry routine on thicker hair that needs extra smoothing before heat is applied.

Warm 1 to 3 drops between your palms, then smooth over dry hair, focusing on mid-lengths and ends. It's very concentrated, so start with less and add more if needed. Thick or coarse hair can also use a few drops worked through damp hair before blow-drying as a smoothing primer.

1. Warm 1-3 drops between palms.
2. Smooth over dry hair, focusing on mid-lengths and ends.
3. For thick or coarse hair, a few drops can also be worked through damp hair before blow-drying.

Pros:

• Extremely concentrated - a few drops per use means a single bottle covers many applications.
• Silicone-based formula gives immediate shine and frizz control without oily buildup when used sparingly.
• Vegan, paraben-free, and made without gluten per the brand.

Cons:

• Uses denatured alcohol as a carrier, which can be drying if applied directly to the scalp rather than just the hair.
• Not a heat protectant or UV filter, despite that claim appearing on some third-party listings - Paul Mitchell doesn't make that claim for this product.
• Fragranced formula with several recognized fragrance allergens (limonene, geraniol, benzyl benzoate), a consideration for fragrance-sensitive scalps.