Nicotinamide Essence 50ml

實驗室專研亮白系精華
維生素B3菸鹼醯胺(Nicotinamide  Essence)

☆細緻膚觸，打造光滑透亮感
☆淨化毛孔，平衡油脂，保持清爽不泛油光

認識維生素B3(菸鹼醯胺)

維生素B3有菸鹼酸(Nicotinic acid)與菸鹼醯胺(Nicotinamide)兩種形式，主要是由色氨酸(Tryptophan)合成而來。色氨酸是一種從膳食來源獲得的必需氨基酸，主要食物來源包括家禽、鮭魚和紅肉。在體內，菸鹼酸會轉化為菸鹼醯胺，是人體非常重要的酶輔。對人體皮膚來說，菸鹼酸的刺激性過大，所以一般使用在肌膚保養的維生素B3是以菸鹼醯胺為主。

根據2021年12月出版，由美國著名藥妝學學者Zoe Diana Draelos主編的最新美容皮膚科學專書Cosmetic Dermatology: Products and Procedures裡頭對維生素B3(菸鹼醯胺)這個成分的整理歸納，近年來關於菸鹼醯胺的研究不勝枚舉，而得到的研究結果顯示維生素B3(菸鹼醯胺)對肌膚保養來說真的是『多才多藝』呢！

菸鹼醯胺之所以能夠具備這麼多的皮膚作用性，其中一個很重要的關鍵在於菸鹼醯胺對皮膚的吸收性。因為菸鹼醯胺分子小以及其不帶電荷的特性，也讓菸鹼醯胺可以在不同的溶劑載體配方中發揮作用。

菸鹼醯胺配方挑戰！
對於菸鹼醯胺主要的配方挑戰是避免在配方中水解成菸鹼酸(Nicotinic acid)，因為即使是小劑量的菸鹼酸也會對皮膚造成刺激性。因此在配方上需要高度要求菸鹼醯胺原料純度，盡量減少游離酸的混雜汙染。所以設計優良的產品配方也是防止負面反應重要的一環！

• USER：All skin types, especially for dull and darkness skin.
• Suggested usage: Make up remover/Cleanser → Exfoliater → Toner → Essence →Mask →Water Gel→Lotion → Sunscreen.
• Preservation: Avoid direct sunlight and keep in dry, cool place.

Cautions: 

1. If you have sensitive or allergic skin, please do skin testing before use. 
2. Do not use if skin is inflamed, wounded, redness and eczema. 
3. Discontinue use at once if signs of rash, redness, or itching occur and consult dermatologist at once if you still feel unwell.
4. This product contains acid components that may increase possibility of skin sensitivity under sunlight. 
5. After using this product, you shall wear sunscreen and/or protective clothing, Avoid direct sunlight for one week. 
6. Infants and children may not use it.

※ Since this product is made from natural plant extracts, there is natural phenomenon of discoloration or sedimentation which does not affect the efficacy, please feel safe to use it.

Product Liability Insurance included. R&D：Dr.Hsieh® (Dr.Hsieh’s LAB)

▶ Shipping Information:

• Please inspect the product, volume, and quantity upon receipt before opening.
• This product is considered a personal hygiene item and is non-returnable once opened (considered used).
• Returned items must be in brand-new condition with no signs of tampering, and the outer packaging must be complete.
• Returns or exchanges must be requested within 7 days of receipt. Requests beyond this period will not be accepted.

*To support environmental protection, we do not issue paper invoices. A 2-part electronic receipt will be uploaded to the E-Invoice Platform of the Ministry of Finance within 48 hours of issuance. You can check the invoice the next business day via the "Order Inquiry" section on the Dr.Hsieh official website.

▶ Delivery Time:

• Home delivery takes 2–3 working days; remote areas may take 3–5 working days.
• No delivery on weekends or holidays. Specific delivery times cannot be scheduled.
• If no one is available to receive the parcel, we recommend choosing convenience store pickup (store-to-store).
• Convenience store pickup takes 3–5 working days. Parcels are held for 7 days.
• Please provide your real name and correct mobile number to ensure SMS notifications and successful pickup.

▶ Return/Exchange Policy:

• Customers who purchase from Dr.Hsieh Official Website are entitled to a 7-day appreciation period (counted from the day the product arrives), in accordance with the Consumer Protection Act. (Note: The appreciation period is not a trial period.)
• If the product is damaged upon receipt, please notify us within 7 days. Returns will not be accepted after this period.Once opened, returns or refunds will not be accepted.

※ Please contact us within the 7-day period for any return/exchange requests. ※ All returns must be applied for through the backend system. If you wish to add additional returns or report missing items within 7 days, you will need to bear the reshipping costs.

• For exchanges, please call our customer service line at 0800-015-789, and our staff will assist you.
• For returns, log into your account → Member Center → Order History / Details → Submit request via Order Customer Service System.
• To avoid disputes, please double-check your order before requesting a return.
• For bundled/promotional items, if part of the bundle is returned, the remaining items will be charged at the original price.

※ Customer Service Hotline: 0800-015-789 (Monday–Friday, 8:30 AM – 5:30 PM)

▶ Situations Where Returns/Exchanges Will Not Be Accepted:

• The 7-day return period has expired
• Product has been opened or used
• Missing original packaging or promotional gifts
• Malicious or bulk returns (more than 5 times per year per customer = malicious; more than 15 items returned at once = bulk return)
• Products returned with dents or stains caused after receipt by the customer (not applicable to manufacturing defects)
• Products not purchased through the official Dr.Hsieh website are not eligible for return/exchange via our customer service