IMPORTANT NOTE: After receiving the product, let it settle. Do NOT open immediately as the product may bubble up and spill. Also, hot weather during transit can cause the serum to leak. This is a typical occurrence, due to the nature of vitamin C. Just wipe leaked liquid, store in the fridge, and use as normal. Normal color of the serum is clear to slightly yellowish due to its high % of vitamin C. BY ORDERING, you acknowledge that the serum may leak DURING TRANSIT from our warehouse to your address. The "With Spill" variation is cheaper because we have found that it has leaked even BEFORE dispatching it from our warehouse. A paraben-free serum with 21.5% vitamin C, formulated with only TEN essential ingredients. With 70% nourishing sea buckthorn extract instead of just water, this non-sticky vitamin C serum prevents and fades pigmentation while keeping skin hydrated and nourished with vitamin E, amino acids, and minerals. Expect healthy skin and a radiant complexion with By Wishtrend's Pure Vitamin C 21.5 Advanced Serum. Review(s): "I've gone through a handful of bottles and love the results it has given me: brighter skin, completely faded hyper pigmentation spots from previous acne, less noticeable pores and just balancing out my overall skin. I can't stop loving this vitamin C serum. Absolute favourite!" - Al Size: 30 mL To use: Use 2-3 times a week after cleansing. To keep irritations to a minimum, avoid using in conjunction with products containing AHA, BHA, and retinol. Note(s): - Store in the refrigerator to maximize the effectiveness of the serum. - Hot weather during transit can cause the serum to leak. This is a typical occurrence, due to the nature of vitamin C. Just wipe leaked liquid, store in the fridge, and use as normal.