ROUND LAB | Irreplaceable No. 1 Skincare Set
ROUND LAB | Irreplaceable No. 1 Skincare Set is backordered and will ship as soon as it is back in stock.
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INCI
INCI
Key ingredients
Key ingredients
Instructions for use
Instructions for use
Results
Results
Indicated for
Indicated for
Benefits
Benefits
FAQs
FAQs

ROUND LAB Irreplaceable No. 1 Skincare Set
The skin is a dynamic organ constantly exposed to internal factors (cellular metabolism, epidermal renewal) and external factors (UV radiation, free radicals, pollution). The ROUND LAB Irreplaceable No. 1 set addresses this complexity through a scientific approach involving two complementary phases: preparation + defense.
Phase 1 – 1025 Dokdo Toner:
This toner incorporates deep sea water from Ulleungdo Island (from depths of more than 150 m), rich in over 90 natural trace elements—magnesium, calcium, potassium—that act as cofactors in cellular regeneration and the homeostasis of the dermal extracellular environment. It also contains extracts such as Chondrus crispus (red algae) and cane sugar (Saccharum officinarum), which provide a gentle enzymatic exfoliating effect and promote stratum corneum renewal. The clinical result: greater skin uniformity, improved absorption of subsequent active ingredients, and a reinforced skin barrier by reducing thickened texture.
Phase 2 – Birch Juice Moisturising Sunscreen SPF 50+ PA++++:
Ultraviolet (UV A + UV B) radiation causes damage to cellular DNA, oxidative stress, and collagen degradation. This sunscreen incorporates state-of-the-art chemical filters (for example, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Bis‑Ethylhexyloxyphenol Methoxyphenyl Triazine) that cover broad ranges of UV A and UV B, combined with birch sap (Betula platyphylla japonica) containing minerals, amino acids, and vitamins, and ingredients such as niacinamide, hyaluronic acid, and vitamin C derivatives to reinforce hydration, soothe inflammation, and improve skin tone. The scientific strategy is clear: the toner is applied first to optimize skin condition, followed by the sunscreen to create a functional defense barrier against the environment.
With continued use of the set, the following results are achieved: controlled epidermal renewal, improved barrier function, prolonged hydration, and broad-spectrum UV protection—all with a minimalist formulation free from harsh fragrances or obvious irritants.



