Principia Advanced Skin Renewal Kit – Niacinamide, Toner & Mandelic Serum

Reveal clearer, smoother and more even-toned skin with the Principia Advanced Skin Renewal Kit, a powerful 3-product routine designed to target acne, oiliness, texture irregularities and stubborn hyperpigmentation. Each formula uses high-performance actives at clinically effective concentrations to deliver visible results—fast.

Start your routine with the AL-7 Toner, combining 7% Lactic Acid and 1% Salicylic Acid to gently exfoliate the skin surface while penetrating deeply into pores to remove impurities, reduce congestion and refine uneven texture.

Follow with the NC-10 Niacinamide + Zinc Serum, formulated with 10% Niacinamide and 1% Zinc PCA to balance oil production, improve barrier function, reduce inflammation, shrink enlarged pores and even out skin tone.

Finish with the AM-10 Mandelic Acid + Alpha-Arbutin Serum, featuring 10% Mandelic Acid for controlled exfoliation and 1% Alpha-Arbutin to fade dark spots, acne marks, melasma and uneven pigmentation, promoting a brighter and more uniform complexion.

With consistent use, this kit minimizes breakouts, calms redness, smooths rough texture and restores clarity for healthier, radiant and balanced skin.

Step 1 — Toner (AL-7)

• Apply at night only
• After cleansing, apply a small amount to a cotton pad or hands
• Sweep over face, avoiding the eye area
• Do not rinse

Step 2 — Niacinamide 10% + Zinc PCA 1% Serum (NC-10)

Morning and/or night
• Apply 2–4 drops to face after toner
• Massage gently until absorbed

Step 3 — Mandelic Acid 10% + Alpha-Arbutin 1% Serum (AM-10)

Night only (after toner and before moisturizer)
• Use 2–4 drops evenly on the skin
• Avoid using together with the toner on the same night if irritation occurs
• Always use sunscreen during the day

✔ Controls excess oil and reduces shine
✔ Minimizes acne and prevents future breakouts
✔ Refines texture and unclogs enlarged pores
✔ Fades hyperpigmentation, dark spots and acne scars
✔ Smooths uneven tone and rough skin
✔ Brightens overall complexion
✔ Improves barrier health and reduces redness
✔ Safe for sensitive and acne-prone skin
✔ Multi-acid, multi-benefit routine