Description

Based on your request, here are descriptions of top-rated brightening serums designed for dry skin, including options in 50ml–60ml sizes.

Recommended Brightening Serums for Dry Skin (60ml Range) 
Hyphen 18% Brightening + 20% Collagen Double Shot Face Serum (50ml)Description: A dual-phase, nourishing formula specifically designed for dry skin to combat dullness and hyperpigmentation. It combines 11% Mandarin Extract for brightness, 5% Niacinamide for dark spots, and 2% Polyglutamic Acid for deep, intense hydration. The inclusion of Bakuchiol and Rosehip Oil repairs the skin barrier, leaving the skin plump, bouncy, and hydrated.
Best For: Dry and combination skin needing radiance, collagen boosting, and hydration.
The Ordinary Niacinamide 10% + Zinc 1% (60ml)Description: An up-sized, potent serum designed to improve moisture retention by strengthening the epidermal barrier, making it suitable for dry skin that is also congestion-prone. The 10% Niacinamide boosts hydration over 7 days while improving skin texture and brightening the overall complexion.
Best For: All skin types including dry skin with texture issues.
Plix Pineapple De-Pigmentation Dewy Serum (30ml – Multiple bottles often bundled)Description: A lightweight, non-greasy serum that helps alleviate skin dryness while providing a dewy glow. It uses 2% Alpha Arbutin and 10% Niacinamide to fade dark spots and even skin tone without stripping moisture.
Best For: Dry, sensitive, and combination skin needing dark spot reduction. 

Key Ingredients to Look For
Hyaluronic Acid: Provides intense hydration to combat dryness while brightening.
Niacinamide (Vitamin B3): Repairs the skin barrier and boosts moisture retention.
Alpha Arbutin/Vitamin C: Fades dark spots and improves radiance without causing dryness. 

General Benefits
Intense Hydration: Reduces dryness and flakes, keeping skin plump.
Radiance Boost: Combats dullness and provides a naturally vibrant look.
Dark Spot Treatment: Reduces acne marks, pigmentation, and age spots.
Fast-Absorbing: Nourishes deeply without leaving a sticky or oily residue.