The history of Whoo

The history of Whoo UV Ultimate Red Sun Stick

Ingredient analysis and how the ad lines read

Read on 2026-09-22

What is this product?

A 7g herbal-luxury sun stick built on three modern UV filters, suitable for easy on-the-go sun care, though it contains fragrance and fragrance allergens that sensitive users should weigh.

What makes it different?

The formula pairs three UV filters, placed at positions 8, 9 and 13, with a wax and ester stick base that spreads smoothly. A long run of traditional herbal extracts including ginseng root extract appears in the back portion of the list, alongside astaxanthin and tocopherol. Calamine at position 11 gives the stick its reddish tone. Concentrations are not disclosed for any of these.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary, except 11 with no dictionary entry, left in Korean.

Key ingredientWorth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

We could not place these in the list above: 합성왁스, 돌콩오일

Did the ad claims hold up?

We checked 3 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

Claims translated from Korean, originals preserved.

backed by evidence1

  • Wrinkle improvement, UV protection
    Korean original

    주름개선, 자외선 차단

likely, not proven1

  • A sun stick that applies smoothly and finishes dry for simple sun care anytime, anywhere
    Korean original

    부드럽게 발리며 보송하게 마무리되는 선스틱으로 언제 어디서든 간편한 선케어

partly backed1

  • A low-irritation antioxidant sun stick that is easy to apply over with a smooth and dry feel
    Korean original

    부드럽고 보송한 사용감으로 덧바르기 편한 저자극 항산화 선스틱

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines