Pure Vitamin C 24% Face Serum – Dark Spot Remover for Sensitive Skin with Collagen Anti Aging Even out Skin Tone Non irritation tested, Wrkinkles, Korean Mild Vita C Facial Serum 1.01 Fl Oz

Update: I normally purchase Cosrx vitamin C repeatedly, but am returning to TirTir because TirTir offers 1.01 ounce while Cosrx offers .7 ounce. Both are right at the same price. Both are effective. Both do not irritate my skin. I find that as I used the stronger formulas of vitamin C my stinging went away--that or TirTir altered their formula; either way, I have no stinging, redness, or irritation, even with my Rosacea redness. As well, it absorbs nicely, isn't as oily feeling as I remember - in fact, it didn't stay oily on my skin for long at all. Gave me a glow. Some things to note. --This may smell 'fishy' or otherwise not pleasant - that is normal. Most all vitamin c serums will smell funny. They shouldn't smell 'rancid' or like old oil, but the fishy smell is normal. That's why some brands will put fragrances - to mask the off-scent of vitamin c. --If you don't use vitamin c within a few months, it may start to oxidize - if your vitamin c is turning darker, then it may be oxidizing and that isn't going to be as effective. I keep mine in the refrigerator just to be sure, though I use it every morning, so it empties quickly. --Everyone's skin is different, but this is a stronger vitamin c so you may have irritation, or slight stinging when using. You'll have to gauge whether this is temporary and okay or if this is too strong a formula for you. There are other vitamin c serums that aren't as strong. I will say that Cosrx has a vitamin c serum that's about this strength and I don't get the stingy feeling from it as much as I do this TirTir - though the stingy feeling doesn't last long. --This is slightly oily but so are other vitamin c serums that I like so I am used to this. Cosrx, Gangnam Glow, those are slightly oily too, and those also have the fishy odor (though Gangnam Glow uses essential oils to mask it- Cosrx does not). --If you have rosacea prone skin like I do, the way to use this may be important. I use my vitamin c after cleansing and toning but I wait between those steps as I want my face dry and the toner(s) to be absorbed. So I cleanse, tone, and then go get my coffee, take the dog out, whatever, and then apply my vitamin c. I then let that absorb while I do something else in my morning routine - maybe 15 minutes at least, and then go ahead with the rest of my skincare. This works for me. I do not like their dropper. It doesn't pick up the serum very well - and that goes for their milky toner too. Don't know what's up with their droppers. Would I order this vitamin c again? I would think about it -but particularly if this was on sale again, I would.

This is my first time using a vitamin C+ serum. I have been switching up my skincare and got turned on to K-Beauty skincare through Miss Darcei and the Tir Tir Mask Fit Red Cushion Foundation. I have been using this for about three weeks, and I am noticing a difference. I have some acne hyper-pigmentation and general pigmentation dark areas that I have noticed are less visible. It is even getting rid of my glasses marks on the bridge of my nose! I'm also noticing that some of my fine lines are less noticeable as well. Here's a few things you should know: 1.) It is an oil-based serum. I was a bit nervous about that because I have combination/oily skin, but so far I have not experienced any breakouts or clogged pores. I use a dropper sized amount on my face and my neck, and smooth it into my skin. 2.) The directions I have found have said to use this after toner. I use the Tir Tir Milk Toner Light. I clean my face with the powdered Tir Tir enzyme face wash, dry my face, apply the toner, and let that sink in before I apply this serum. 3.) After I apply this serum, I let it soak in before I use the Tir Tir SOS serum as my moisturizer. I let that sink in, and then I apply sunscreen. I have not tried this under makeup yet, so I don't know how well they play together as an oily skin girl. I have not tried this with any other moisturizer, so I'm not sure how well this will play with other non-Tir Tir products. ADDITIONAL POINTS: a.) Do a patch test before you commit to applying this all over your face. I applied some inside the crook of my elbow and a little on my jawbone/neck area and waited 24 hours to see if I had a reaction. When there was none, I started using it. b.) This serum is strong, so use it every other day or twice a week until your skin gets used to it. I'm now able to use this five days a week, and I'm working up to seven. c.) VERY IMPORTANT! THIS HAS TO BE REFRIGERATED! I think the reason why people have had problems with it smelling and turning brown is because they're not refrigerating this serum after use. Don't store this in a hot place like a bathroom where you take your showers and hot baths. Use it and refrigerate it ASAP - this has to be kept in a cool, dry, and dark place. I have not had any issues of it smelling bad out of the bottle or on my face. d.) ALSO VERY IMPORTANT! Once you break the seal on this bottle, be sure to use this up in TWO MONTHS or it will turn on you. Oxidation turns this serum brown, so keep it sealed and refrigerated after use. So far I am very pleased with this serum and have made it a part of my daily beauty routine.

I must say that this product is impressive; it delivers great results. However, the scent could use some improvement ( fishy). While it's an unusual smell, the quality makes it worth it.

Wiederholungstäter nur das und kein anderes mit 24% reines Vitamin C perfekt für müde Haut.

This serum is good but it’s VERY strong . It says use a little amount but no guidance on how much. It’s quite potent and I don’t have sensitive skin but it didn’t suit my skin at all . Use it only once a day but I would be very weary if you have sensitive skin ,

Wanted to love this however leaves a burning sensation on the skin. It’s a no from me

Buen producto, tiene consistencia un poco aceitosa, creo que es mas ideal para piel seca a mixta

All'inizio faceva cattivo odore, molto simile alla puzza di pesce, poi è svanito. Secondo me nn è adatto al mio tipo di pelle. Non so se lo ricomprerò Sulla confezione indica di usarlo entro 2 mesi, il prodotto é tanto e se se ne utilizza una volta al giorno è quasi impossibile finirlo tutto