TIRTIR Pure Vitamin C 24% Face Serum — 1.01 fl oz Brightening, Triple Collagen for Sensitive Skin

TIRTIR Pure Vitamin C 24% Face Serum is a concentrated brightening and firming facial serum formulated to even skin tone and support elasticity without harsh irritation.

This lightweight Korean-style serum blends a high-strength 24% vitamin C concentrate with triple collagen and soothing ingredients to target dark spots, dullness, and early signs of aging. Designed with sensitive skin in mind, the formula includes mild actives and anti-inflammatory alpha-bisabolol to minimize irritation while delivering visible results. The product comes in eco-friendly glass packaging with a removable label for easier recycling.

How quickly can I expect to see brighter skin?

Many users notice improved radiance and reduced dullness within two weeks of consistent use, though individual results vary with skin type and routine. Vitamin C works gradually to reduce the appearance of pigmentation and add a luminous look to the complexion.

• Contains 24% pure vitamin C (246,750 ppm) for potent brightening power.
• Use twice daily—morning and evening—for steady improvement.
• Protect daytime-treated skin by applying SPF 30+ after serum absorption.

Will this serum work for sensitive or reactive skin?

Formulated to be mild, the serum includes alpha-bisabolol (0.5%), a calming ingredient that helps reduce visible irritation. Its composition balances strong antioxidant action with soothing elements to make it suitable for many with sensitivity, but patch testing is recommended.

• Low-irritant supportive ingredients help counterbalance potent vitamin C.
• Patch-test on inner wrist or jawline for 48 hours before full-face use.
• Discontinue if persistent redness or stinging occurs and consult a dermatologist.

How does the collagen in this serum affect skin firmness?

The formula includes triple collagen to help improve the feel and appearance of skin elasticity and plumpness. While topical collagen molecules primarily support surface hydration and texture, combined with vitamin C they can enhance a firmer-looking complexion over time.

• Triple collagen supports skin’s moisture and bounce.
• Vitamin C assists skin’s visible smoothness by helping even tone and texture.
• Best used alongside a hydrating moisturizer for maximum plumping effect.

How should I use this serum within my routine?

Apply a few drops to cleansed, dry skin, gently massaging until fully absorbed. Use in the morning and/or evening; always follow with sunscreen during the day to protect results when used in the AM.

• Apply 2–3 drops to face and neck after cleansing and toning.
• Layer a moisturizer after absorption; apply SPF 30+ for daytime protection.
• Store in a cool, dark place to help preserve vitamin C potency.

Who is this for? If you want a high-strength topical vitamin C that targets dark spots, dullness, and loss of firmness while being considerate of sensitive skin, this serum is intended for you. It suits people seeking a concentrated brightening step as part of a Korean skincare-inspired routine, those looking to address early signs of aging, and eco-conscious buyers who prefer recyclable glass packaging. Avoid use on broken or severely inflamed skin, and consult a skincare professional if you have specific medical concerns.

Ingredients

Propanediol, Ascorbic Acid, Betaine, (-)-alpha-bisabolol, Water, Butylene Glycol, 1,2-Hexanediol, Centella Asiatica (Gotu Kola) Root Extract, Centella Asiatica (Gotu Kola) Extract, Centella Asiatica (Gotu Kola) Leaf Extract, Soluble Collagen, Hydrolyzed Collagen, Atelocollagen, Asiatic Acid, Madecassoside, Madecassic Acid, Asiaticoside, Acetyl Hexapeptide-8