
產品描述 / Product Description :
Obagi C5 Serum 維他命 C 精華營養液 12ml 是日本樂敦製藥旗下 Obagi C 系列的純維他命 C 美容液,主要針對開始出現的肌膚粗糙及紋理不均。配方結合純維他命 C(抗壞血酸)與維他命 E,為角質層補充水分,幫助改善乾燥造成的暗啞及粗糙外觀,令膚觸更柔滑,呈現水潤光澤。C5 在 C5、C10、C20 及 C25 系列中屬較低維他命 C 濃度的選擇,但不代表保證不刺激。早晚潔面及使用化妝水後,取 3 至 4 滴於掌心,再以指尖輕柔塗勻全面,避開眼周,之後按需要接續乳液或面霜。產品帶有西柚柑橘香氣,日間應配合防曬護理。
常見問題 FAQ
問:Obagi C5 Serum 應該怎樣使用?
答:早晚潔面及使用化妝水後,以滴管取 3 至 4 滴於掌心,再用指尖輕柔塗勻全面,集中照顧暗啞或粗糙的位置,避開眼周及眼睛。之後可按需要接續乳液或面霜;如特別在意乾燥,品牌亦建議可安排在乳液後使用。
問:使用多久可以看到改善?
答:產品主要透過滋潤角質層,幫助改善粗糙、紋理不均及乾燥暗啞的外觀,令肌膚更顯柔滑有光澤。實際效果及所需時間會因肌膚狀態與護理習慣而異,沒有適用於所有人的固定見效時間,亦不應為追求更快效果而自行增加用量。
問:維他命 C 新手或敏感肌可以使用嗎?
答:C5 是品牌 C 系列中較低維他命 C 濃度的選擇,可供希望由較低濃度開始的人士考慮,但濃度較低不等於一定溫和或適合所有敏感肌。產品帶有香氣,首次使用前應查看實物成分及注意事項,可先於小範圍試用;局部試用不能排除所有刺激或過敏風險。如肌膚正持續泛紅、脫皮或不適,應先暫緩使用。
問:使用時有刺痛感,是否代表正在發揮作用?
答:不是。品牌指出,乾燥或粗糙肌膚使用時有機會出現短暫刺感,但刺痛並不是有效的必要條件。如刺痛明顯,或伴隨持續泛紅、痕癢、皮疹及其他不適,應停止使用,並按情況諮詢皮膚科醫生。
問:精華呈黃色或褐色,是否代表已經變壞?
答:不一定。品牌說明,配方可呈無色、黃色至褐色,單憑顏色不能判定品質有問題。如使用期間出現異味、質地異常,或懷疑曾因高溫及不當保存而影響品質,應先暫停使用並向品牌或供應商查詢。使用後請蓋緊瓶蓋,並依實物包裝指示保存。
問:可以配合酸類、視黃醇及防曬使用嗎?
答:一般可配合保濕及防曬產品使用。酸類及視黃醇並非一概不能搭配,但同時使用多款活性產品可能增加刺激;建議逐款引入,並按肌膚耐受度分開時段使用。日間應照常使用合適的防曬產品。如正使用處方皮膚藥物,請先向醫生確認搭配方法。
Obagi C5 Serum 12ml is a pure vitamin C facial serum from Rohto Pharmaceutical’s Japanese Obagi C range, designed primarily for those beginning to notice roughness and uneven skin texture. Combining pure vitamin C, also known as ascorbic acid, with vitamin E, it moisturizes the outermost layer of the skin to help improve the appearance of dryness-related dullness and roughness, leaving skin feeling smoother and looking more radiant. C5 is a lower-vitamin-C-concentration option within the C5, C10, C20, and C25 range, but this does not guarantee irritation-free use. Morning and evening, apply 3 to 4 drops evenly to the face after cleansing and toning, avoiding the eye area. Follow with an emulsion or moisturizer as needed. The serum has a grapefruit-citrus scent. Use sunscreen during the day.
Frequently Asked Questions
Q: How should I use Obagi C5 Serum?
A: After cleansing and toning in the morning and evening, dispense 3 to 4 drops into your palm. Gently smooth over the face with your fingertips, focusing on areas of dullness or rough texture while avoiding the eye area and contact with the eyes. Follow with an emulsion or moisturizer as needed. If dryness is a particular concern, the brand also suggests applying the serum after an emulsion.
Q: How long does it take to see results?
A: The serum moisturizes the outermost layer of the skin to help improve the appearance of roughness, uneven texture, and dryness-related dullness, leaving skin looking smoother and more radiant. Results and timing vary with skin condition and skincare habits. There is no fixed timeline that applies to everyone, and applying more will not guarantee faster results.
Q: Can vitamin C beginners or sensitive skin use it?
A: C5 is a lower-vitamin-C-concentration option within the brand’s C range and may be considered by those who prefer to start with a lower concentration. However, a lower concentration does not guarantee gentleness or suitability for all sensitive skin. The product is scented, so review the ingredients and precautions on your packaging before use. Consider testing a small area first, keeping in mind that a patch test cannot rule out all irritation or allergic reactions. Postpone use if your skin is persistently red, peeling, or uncomfortable.
Q: Does tingling mean the serum is working?
A: No. The brand notes that dry or rough skin may experience temporary tingling, but discomfort is not required for results. Discontinue use if tingling is intense or accompanied by persistent redness, itching, a rash, or other discomfort. Consult a dermatologist as appropriate.
Q: Does a yellow or brown color mean the serum has gone bad?
A: Not necessarily. The brand explains that the formula may range from colorless to yellow or brown, so color alone does not establish a quality problem. If you notice an unusual odor or texture, or suspect that heat or improper storage has affected the product, pause use and contact the brand or supplier. Close the cap tightly after use and follow the storage directions on your packaging.
Q: Can I use it with exfoliating acids, retinol, and sunscreen?
A: It can generally be paired with moisturizing products and sunscreen. Exfoliating acids and retinol are not automatically incompatible, but combining several active products may increase irritation. Introduce products individually and consider using them at separate times according to your skin’s tolerance. Continue using a suitable sunscreen during the day. If you use prescription skin medication, consult your doctor before combining products.


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