Skin Improvement Effects When Using Spicules and Acid Peels Together: Focusing on Changes in Sensitivity, Pores, Sebum, and Wrinkles

Purpose: This study investigated the effects of sequential combined peeling with Spicule and Acid ingredients on skin sensitivity, pores, sebum, and wrinkles, and evaluated participant satisfaction and skin irritation responses.Methods: A single-group repeated-measures design was employed. Twenty women aged 30–60 years residing in Busan, Gyeongnam, and Ulsan, Korea, participated in the study. After approval by the Institutional Review Board, combined peeling treatments were administered once weekly for four consecutive weeks. An Acid-containing first-step product was applied for approximately 5 min, followed by a Spicule-containing second-step product without removing the first product, and maintained for approximately 15 min. Skin sensitivity, pores, sebum, and wrinkles were measured using the APM PRO skin analysis system at baseline and after each treatment session. Repeated-measures analysis of variance was conducted using SPSS Statistics 28.0, with the Greenhouse–Geisser correction applied when the assumption of sphericity was not met.Results: Skin sensitivity significantly decreased from 25.65 at baseline to 13.25 after the fourth treatment session (p<.001), while pore values decreased from 76.45 to 39.70 (p<.001). Wrinkle values also significantly decreased from 24.00 to 8.05 (p<.001). Sebum levels increased during the initial treatment sessions and subsequently decreased, showing a relatively stabilized pattern over repeated applications (p<.001). More than 90% of the participants reported positive intentions to receive the treatment again and recommend it to others. Overall satisfaction with changes in skin condition was high, and most irritation responses, including erythema, desquamation, pruritus, and pain, were absent or mild.Conclusion: Repeated sequential application of combined Spicule and Acid peeling was associated with significant changes in skin sensitivity, pores, sebum, and wrinkles, along with high participant satisfaction and generally favorable skin responses. These findings provide preliminary evidence for the potential use of combined Spicule and Acid peeling as an aesthetic skin-care method. Further controlled studies with larger and more diverse samples are required to verify its independent effects and clinical applicability.