ILIA Super Serum Skin Tint SPF 40 — Formosa ST4 (Light Warm), Hydrating Sheer-to-Medium Coverage

ILIA Super Serum Skin Tint SPF 40 in Formosa ST4 is a lightweight, hydrating skin tint that evens tone, blurs pores, and provides mineral SPF 40 protection while delivering skincare benefits.

This multi-tasking tinted serum combines sheer-to-medium coverage with skincare actives and mineral sun protection, designed to look like skin rather than mask it. Formulated without fragrance, silicones, or talc, the formula includes hyaluronic acid, niacinamide, and plant-based squalane to hydrate, refine texture, and help skin appear plumper and smoother. The shade Formosa ST4 suits light skin with warm undertones and comes in a 1 fl oz (30 ml) tube.

How does this serum tint protect skin and still feel lightweight?

The product uses a mineral SPF 40 filter to provide broad-spectrum defense while maintaining a fluid, breathable finish. Its lightweight emulsion layers easily under or over moisturizers and gives a dewy look without heavy residue. The formulation avoids heavy silicones so it feels natural and comfortable all day.

• Mineral SPF 40 for broad-spectrum sun defense
• Fluid texture that blends without caking
• Fragrance-free and silicone-free for a breathable finish
• Non-comedogenic to minimize pore clogging

What skincare benefits will I notice with regular use?

The serum tint contains targeted actives to address hydration, texture, and the visible signs of uneven tone. Hyaluronic acid draws moisture into the skin for a plumper look, while niacinamide helps refine pores and even skin tone. Plant-based squalane locks in moisture and supports elasticity, giving an overall smoother appearance.

• Hyaluronic acid for immediate and lasting hydration
• Niacinamide to help minimize the look of pores and balance tone
• Squalane to seal in moisture without greasiness
• Dermatologist-tested and safe for sensitive skin types

How much coverage does Formosa ST4 provide and how should I apply it?

Super Serum Skin Tint delivers sheer-to-medium coverage that blurs imperfections while letting natural skin texture show through. Apply a pea-sized amount and blend with fingers, a brush, or sponge—layer for more coverage on areas that need it. The formula pairs well with cream blush and highlighter for a fresh, lit-from-within finish.

• Sheer-to-medium, buildable coverage
• Best applied with fingers for skinlike finish; brushes/sponges work too
• Layer in thin amounts to avoid pilling with other products
• Pairs well with cream or powder finishing products

Will this shade suit my skin and is it clean and cruelty-free?

Formosa ST4 is described as light with warm undertones; it blends into light complexions with golden or warm peachy undertone notes. ILIA offers a broad shade range to help find a close match, and the brand formulates this product vegan, cruelty-free, and free from fragrance, gluten, silicone, and talc. It’s non-comedogenic and designed to be gentle on sensitive skin.

• Shade: Formosa ST4 — light with warm undertones
• Vegan and cruelty-free formulation
• Free from fragrance, gluten, silicone, and talc
• Non-comedogenic and dermatologist-tested

Who this is for: If you want a single-step product that combines sun protection, light coverage, and visible skincare benefits, this serum tint is ideal. It’s particularly suited to those who prefer a natural, dewy finish, have sensitive or combination skin, and want clean, cruelty-free cosmetics that enhance rather than hide natural skin. Choose Formosa ST4 if you are light with warm undertones and seek buildable coverage with hydration and SPF in one tube.

Ingredients

Active Ingredients: Zinc Oxide 12.0% Aqua/Water/Eau, Squalane, Shea Butter Ethyl Esters, Isoamyl Laurate, Polyglyceryl-3 Ricinoleate, Butyloctyl Salicylate, Propanediol, Isopropyl Isostearate, Polyglyceryl-3 Diisostearate, Methylpropanediol, Niacinamide, Sodium Chloride, Lecithin, Caprylyl Glycol, Silica, Aloe Barbadensis Leaf Juice Powder, Bisabolol, Hydrolyzed Sodium Hyaluronate, Allantoin, Phenylpropanol, Sodium Myristoyl Glutamate, Sodium Hyaluronate, Tetrasodium Glutamate Diacetate, Aluminum Hydroxide, Polyhydroxystearic Acid. May Contain/Peut Contenir (±): CI 77491, CI 77492, CI 77499 (Iron Oxides), CI 77891 (Titanium Dioxide)