How to Use IOPE Retinol Reti-Jection Serum Safely

Quick answer

Use IOPE Retinol Reti-Jection Serum at night on clean, completely dry skin, starting once or twice a week and building up only if your skin stays comfortable. Apply a pea-sized amount to the face and follow with moisturizer, then wear broad-spectrum sunscreen every morning. If you are new to retinol, the gentler IOPE Retinol 0.1% Wrinkle Corrector is a smarter first step.

Your step-by-step IOPE retinol routine

1. Step 1: Patch test on two separate nights: Apply a small amount behind your ear or along the jawline and wait 48 hours before the second test. Common mistake: testing on the cheek, where skin is thinner and reactions look worse than they are. Checkpoint: no itching, burning, or spreading redness before you move to the full face.
2. Step 2: Start with clean, fully dry skin: Cleanse, then wait until your skin feels dry to the touch before applying the serum. Common mistake: applying to damp skin straight after cleansing, which increases the chance of stinging. Checkpoint: skin should feel neutral, not tight or wet.
3. Step 3: Use a pea-sized amount for the whole face: Dot the serum on forehead, cheeks, and chin, then spread thinly and avoid the eyelids, inner corners, and lip lines. Common mistake: layering a second pump because the first felt light. Checkpoint: one pea-sized amount is enough for a full-face application.
4. Step 4: Sandwich with moisturizer if you are new: Follow immediately with your usual moisturizer, or apply moisturizer first and the serum second if your skin is reactive. Common mistake: skipping moisturizer because the serum feels elegant on its own. Checkpoint: your skin should feel comfortable, not tight, within ten minutes.
5. Step 5: Begin at once or twice a week: Keep the same frequency for two to three weeks before adding a night. Common mistake: increasing frequency after one good week, which is when irritation usually appears. Checkpoint: no persistent redness or flaking before you add another night.
6. Step 6: Expect purging, not a broken barrier: Small textured bumps or breakouts in your usual problem areas in the first weeks are common retinol purging; burning, swelling, or raw patches are not. Common mistake: treating every bump as purging and pushing through genuine irritation. Checkpoint: if it burns rather than just breaks out, stop and go back to moisturizer only.
7. Step 7: Wear sunscreen every single morning: Apply broad-spectrum sunscreen as the last step of your morning routine, even on cloudy days and indoor workdays. Common mistake: skipping sunscreen because you used the serum the night before, not that morning. Checkpoint: no unprotected sun exposure while you are using retinol.

Product facts that shape how you use it

• IOPE RETINOL RETI-JECTION SERUM 50ml: IOPE Retinol Reti-Jection Serum is a 50ml high-potency Korean retinol serum with 2% Retinol RXTM and spicule delivery technology, designed to visibly smooth wrinkles, refine pores, and improve skin elasticity. The strength and delivery system explain why this belongs in a low-frequency night routine rather than daily use from day one.
• IOPE Retinol 0.1% Wrinkle Corrector: IOPE Retinol 0.1% Wrinkle Corrector is a gentle Korean retinol treatment for beginners, and the set includes the 30ml treatment plus Super Vital Essential Softener 32ml and Emulsion 32ml. The included toner and emulsion let you build a complete beginner routine without buying separate hydrating steps.
• VitalBeautie Super Retinol C Special Set (1.8g x 20 sticks): VitalBeautie Super Retinol C Special Set contains 20 sticks of 1.8g powder with 1,000mg vitamin C, vegan retinol, vitamin D, E, and zinc. It supports skin from within, so it can be taken on retinol nights without adding another topical layer.