ROUND LAB Birch Juice Mild-up Mineral Sunscreen SPF 50+ 1.69 fl oz — fragrance-free, non-nano zinc oxide, lightweight satin finish

ROUND LAB Birch Juice Mild-up UV LOCK SPF 50+ is a mineral-based, fragrance-free facial sunscreen that delivers high SPF 50+ PA++++ protection while hydrating with birch sap and leaving a lightweight, satin finish.

Built for everyday use, this sunscreen combines physical UV filters with botanical sap to protect and support the skin barrier without feeling heavy or greasy. The formula avoids common irritants and has been dermatologically evaluated for safety, making it suitable for sensitive skin and makeup layering. Whether you want reliable sun defense for daily commutes or a gentle base for cosmetics, this product focuses on comfort and broad-spectrum coverage.

How does this sunscreen protect against UVA and UVB rays?

The product uses non-nano zinc oxide as its active sun-blocking ingredient, creating a physical barrier that reflects and scatters both UVA and UVB radiation. With SPF 50+ and PA++++ ratings, it meets high standards for preventing sunburn and reducing long-wave UVA exposure that contributes to skin aging signals.

• Mineral-based protection using non-nano zinc oxide
• Broad-spectrum coverage for UVA and UVB
• High SPF 50+ and PA++++ classification
• Physical barrier formula suitable for sensitive skin

Will it feel heavy, greasy, or interfere with makeup?

No — the texture is formulated to be lightweight and non-greasy, sinking into skin with a soft satin finish rather than a thick or oily film. It’s designed to pair well with daily cosmetics, acting as a comfortable hydrating base rather than a shiny overlay.

• Light, blendable consistency for easy application
• Satin finish that reduces shine under makeup
• Works well as a primer step for foundations and tints
• Minimal pilling when layered correctly

What skin benefits does birch sap contribute?

Birch sap is included to help fortify skin’s moisture levels while calming the surface. Rather than treating a condition, it supports hydration and the skin’s natural barrier so skin feels less dry after sun protection is applied.

• Gentle hydration to reduce tightness after application
• Supports the skin barrier for everyday resilience
• Soothing profile suitable for reactive or sensitive skin
• Light botanical support without heavy oils or fragrances

Is this sunscreen free from irritants and clinically tested?

Yes — the formula omits 19 commonly used harsh ingredients like parabens, artificial fragrances, and mineral oil, reducing the risk of irritation for sensitive skin types. It has also undergone dermatologist assessment and carries non-comedogenic and hypoallergenic considerations to minimize breakouts and reactions.

• Free from parabens, artificial fragrances, and mineral oil
• Dermatologist-tested and certified by an independent lab
• Non-comedogenic to help prevent pore-clogging
• Fragrance-free for sensitive noses and skin

Who is this for: ROUND LAB Birch Juice Mild-up UV LOCK SPF 50+ is aimed at people seeking a high-protection facial sunscreen that feels light and pairs well with makeup, especially those with sensitive or reactive skin who prefer mineral filters and fragrance-free formulations. It’s also a good choice if you want daily broad-spectrum defense plus mild hydration without heavy oils or strong scents.