Special Offer: Free $42 Colorescience Full-Size Sunforgettable Total Protection Color Balm in Violet Haze!
You can personalize your routine with these targeted booster serums. Each is made with natural ingredients. Simply put a few drops into your usual moisturizer and they will enhance your regimen in the way you want.
Antioxidant Defense Booster: UV rays, pollution, smoking, etc— this serum lets you say no to the free radicals that weaken your skin and accelerate the aging process. This serum's pine bark polyphenols, known to be incredible antioxidants, enhance your skin's resistance to external aggressions while its cocktail of organic oils helps reconstruct the skin's protective barrier.
Hydrating Booster: This serum enhances skin hydration by 32% when added into any moisturizer. It's lightweight formula hydrates with brown algae and glycerin while soothing skin with horse chestnut, black currant, raspberry and vitamin B5.
Lifting Booster: This booster visibly fims lax skin. Its core formula of twenty plants, including rosemary and sage, leave skin more elastic and toned.
Nutrition Booster: Ideal for tired, dry and uncomfortable skin, this booster nourishes skin. It blends restorative, hydrating and softening ingredients for overall skin rejuvenation. Plus, antioxidants keep your skin protected against damaging effects in the environment.
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20 Reviews
HKYARDLEY
Verified Purchase
Love this! Added to my hydra moisturizer it calms and moisturizes my skin so much. Gives me a nice glow
1 person found this helpful
Dianne1951
Verified Purchase
I immediately loved the feel of Yon-ka Hydrating Booster on my face. A couple drops added to my Optimizer Cream added the hydration I need during the cold, dry months. It is soothing with a gentle scent. I have used Yon-ka products for over 30 years. The results show.
0 people found this helpful
LovelySkin Customer
Verified Purchase
I mixed one drop in the day and 2 drops at night with the moisturizer. Helps with my dry and aging skin.
0 people found this helpful
Chilly
Verified Purchase
I love a couple of pumps in my moisturizer. It makes my skin glow, and it's nice to now I'm protected from all the pollution and other stuff out in the enviroment.
0 people found this helpful
JenMor
Verified Purchase
I love this serum!! I’ve been using it for a few years now, and my skin has changed for the better. It mixes so well with my moisturizer and isn’t heavy on the skin. I love that it prevents breakouts from occurring on my face as well. Top Notch Serum!
0 people found this helpful
LovelySkin Customer
Verified Purchase
This is the best serum that I've ever used. I live in a very dry climate and my face always feels better after I apply it.
0 people found this helpful
LovelySkin Customer
Verified Purchase
Soon after the season changed, my skin became instantly dry. Thankfully so, Yon-Ka came to the rescue. It seems like the hydration slowly returned but returned none the less. I was using it every day, 2 pumps. Now, I believe I can decrease to 1 pump. My only complaint would be the delivery system. The product is not thick but more liquid and tends to run from my hand prior to being incorporated into the moisturizer.
0 people found this helpful
LovelySkin Customer
Verified Purchase
This can be added to boost the benefits of your moisturizer. I gave it 4 stars vs. 5 because the scent. I do not like strong scents on my face. Otherwise, it works its magic on your skin.
0 people found this helpful
NancyM
Verified Purchase
This product provides great hydration, I put this on then the Yon-Ka Lotion. Excellent product.
0 people found this helpful
LovelySkin Customer
Verified Purchase
The best for around your eyes. It leaves them very silky smooth no reaction best booster for me.
0 people found this helpful
LovelySkin Customer
Verified Purchase
Adding a little booster with a day dream or a night cream helps your face glow and makes it look younger, softening wrinkle lines slightly. I've used it for several years and don't feel it needs to be used every day --just when your skin seems to need it.
0 people found this helpful
LGrace
Verified Purchase
I love love love this product! I can’t wait to use it every morning and evening! It’s calming. It smells like a high end spa. BUT the best thing is it makes my face so hydrated. I use it over my toner and serum. It’s a lightweight oil. I wish I could use it all over. Try it, I promise you will love it.
0 people found this helpful
LovelySkin Customer
Verified Purchase
As a person with dry/aging skin I truly love this oil! This is a nice edition to their moisturizer as an added boost in hydration! My skin feels extra hydrated and dewey (which I love). I have yet to try a Yonka product that I did not love! Another winner from Yonka! Thank you!!
0 people found this helpful
LovelySkin Customer
Verified Purchase
I love Yon-ka skin care and have used it for 20 years. I will say it seems that the booster Nutri formula has changed? It is heavier. I prefer the original.
0 people found this helpful
Lila
Verified Purchase
I always put this defense booster on after cleansing my face. It restores my skin’s moisture balance. It’s not heavy at all... but a perfect lightweight blend of oils that is not greasy. It’s great alone or as a base for a day or night cream, and it’s very soothing for sensitive skin too (which I happen to have). I highly recommend it!
0 people found this helpful
LovelySkin Customer
Verified Purchase
Great for additional hydration prior to applying a moisturizer. It really seems to absorb into the skin and boost hydration.
0 people found this helpful
brittanycorin14
Verified Purchase
Gives you glowing radiant skin! I love it!
0 people found this helpful
LovelySkin Customer
Verified Purchase
Great product! Makes my skin look great. I have been using Yon-Ka products for almost a year, and my skin has never looked better! LovelySkin offers authentic products at great prices! Will order again!
0 people found this helpful
LovelySkin Customer
Verified Purchase
I noticed some fine lines on my forehead earlier this year, and I decided to try the Defense + Antioxidant Booster, and I am impressed! I usually mix one pump of the serum with my nighttime moisturizer, and my fine lines have disappeared. I wear sunscreen every day but I was also concerned with UV exposure this summer, and I can honestly say my skin feels healthy and looks great since I started using this!
0 people found this helpful
LovelySkin Customer
Verified Purchase
I love this antioxidant booster! My aesthetician recommended it for my combination dehydrated skin. It's a very light nourishing oil that I add to my regular moisturizer (I alternate between Yon-ka Excellence for day and Environ at night), mixing it together in my palm and apply together. Defense + is particularly nice for travel, combating the dryness that occurs from air travel and change in environment. I like how it leaves my skin looking dewy and glowy, not overt shiny. My makeup goes over it easily or for those natural no make-up like days my tinted sunscreen also works well with it.
0 people found this helpful
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Free $42 Colorescience Full-Size Sunforgettable Total Protection Color Balm in Violet Haze! 
Free $44 Yon-Ka Travel-Size Vitamin C Serum C20! 
