In this episode of Love, Saranghae, Peter and Andrea introduce the game-changing launch of the NiaRetin Complex Duo: a two-step serum system featuring 0.1% retinal (retinaldehyde) and 10% niacinamide designed to deliver clinical results without the irritation.From breaking down the science of retinoids (retinol, retinal, retinoic acid) to explaining why niacinamide is the ultimate skin-barrier booster, this episode is your all-access pass to understanding how (and why) this duo works even for sensitive skin.Whether you're brand new to vitamin A or tired of traditional retinol side effects, the NiaRetin Complex Duo is built to work in harmony with your skin, not against it.

✔ The difference between retinol, retinal, and retinoic acid
✔ Why retinaldehyde (retinal) is 20x more effective, and far less irritating, than traditional retinol
✔ Why niacinamide is the perfect companion to retinal, especially for sensitive skin
✔ Who should (and shouldn’t) be using this duo, and when to start
✔ What “purging” really means and how to tell if it’s normal or a reaction
✔ Ingredients to avoid when using retinal (including AHAs, BHAs, and azelaic acid)
✔ How to layer these serums in your routine, and why you should never skip moisturizer
✔ Pregnancy & breastfeeding precautions with retinoids

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