Brightening serums for sensitive skin in 60 ml sizes are concentrated skincare treatments designed to improve skin tone and radiance while being gentle enough to avoid irritation. These products often feature a “supersize” or “upsized” volume, as the standard size for face serums is typically 30 ml.
The phrase “brightening serums for sensitive skin 60 ml theory” likely refers to the 60 ml version of, a cult-favourite serum frequently discussed in skincare “theory” for its ability to brighten skin and manage blemishes while being suitable for sensitive types. While several brands like Skin Theory, Healing Theory, and Facetheory offer brightening serums, they are typically sold in 30 ml sizes. 

Top Brightening Serum Options (Theory & 60 ml)
The Ordinary Niacinamide 10% + Zinc 1% (60 ml):Purpose: Brightens skin, smooths texture, and balances sebum production.
Sensitive Skin Suitability: Formulated without fragrance or common irritants, it strengthens the skin barrier through Vitamin B3 (Niacinamide).
Healing Theory “Theia” Face Brightening Serum (30 ml):Key Ingredients: 5% stable L-ascorbic acid (Vitamin C), 43% Cica, and Licorice.
Sensitive Skin Suitability: Contains Cica and Aloe Vera to soothe inflammation while active ingredients target dark spots.
Facetheory Sensitive Clarifying Serum S15 (30 ml):Key Ingredients: Retinoic acid and Hyaluronic acid esters.
Sensitive Skin Suitability: Specifically designed for “sensitive clarifying” needs, targeting blemishes without the harshness of standard retinoids.
Key Brightening Ingredients for Sensitive Skin
When looking for “theory-based” brightening that won’t irritate, prioritize these ingredients:
Niacinamide: Brightens by preventing pigment transfer and strengthens the barrier.
Cica (Centella Asiatica): Calms redness and supports healing.
Licorice Root Extract: A natural alternative to harsher brighteners that diminishes dark spots.
Tranexamic Acid: Effective for stubborn pigmentation while generally being well-tolerated by sensitive skin.