Take Hydration to the Next Level

Hydra-Therapy Boost Serum

In stock

This revolutionary oil-serum hybrid takes hydration to the next level. Micro-droplets of oil – infused with two powerful actives – are suspended in a hydra-gel to protect their purity and potency until they touch your skin.

Hydra-Therapy Boost Serum is rated 4.9 out of 5 by 65.
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1.0 oz
Add to your ritual
We are committed to formulating without ingredients that do not meet the Erno Laszlo clean standards.

What It's Formulated Without
Phthalates, Parabens, Petrolatum and Mineral Oil

Water (Aqua/Eau), Glycerin, Isononyl Isononanoate, Betaine, Pentylene Glycol, Caprylic/Capric Triglyceride, Carbomer, Sodium Hydroxide, Crithmum Maritimum Extract, Disodium Edta, Amodimethicone, Orbignya Oleifera Seed Oil, Phenoxyethanol, Parfum (Fragrance).
Please be aware that ingredient lists may change or vary from time to time. Please refer to the ingredient list on the product package you receive for the most up to date list of ingredients.

Hydra-Therapy Boost Serum



As the gel dissolves in a refreshing veil of moisture, the oil droplets go to work, delivering vital nutrients and leaving skin its most hydrated, nourished and radiant.


Orbignya Oleifera Seed Oil

Is a rich source of fatty acids and lipids that helps hydrate and plump the skin while attracting and retaining moisture.

Crithmum Maritimum Extract

Among the heartiest plants in nature, lends its unique powers of self preservation to skin by helping rebuild the natural moisture barrier.


A natural moisture magnet, to attract and hold hydration for a glowing complexion.
How it work


How to use it

How to use it

  1. After cleansing, toning and before moisturizer, smooth over face and neck.
  2. Use morning and night.
  3. Avoid eye area.
Rated 5 out of 5 by from This stuff works! I can't believe how wonderful this serum is. It literally lasts the entire day and probably would last longer but I apply it every morning. It doesn't take much to cover my entire face and neck. It also has a very light and pleasant scent. This serum is the best I've ever used! That's saying something because I've used so many different brands through the years. I'm excited to try more products from this brand and highly recommend them. You won't be sorry.
Date published: 2018-07-20
Rated 5 out of 5 by from Holy grail product! This serum is amazing. It’s super light and super moisturizing and keep my skin soft and hydrated all day. I have senesitive skin and this doesn’t irritate it at all. Very lightweight and absorbent. I also have oily skin and doesn’t create extra oil or show it. The packagaing is beautiful and I love how you can see the product as you go through it. A little goes a long way. I’ve been using it now for about a month and already see a difference in my skin. It’s a lot more even and hydrated. Highly recommended for anyone who is serious about skincare or looking to upgrade from your routine.
Date published: 2018-08-14
Rated 5 out of 5 by from Just what I needed I was so pleasantly surprised at how this product not only makes my skin look, but also how it feels to the touch. As I get older, I need different things for my face and I have to say this is my hero right now. I waited to review until I had used for a while and it really just made it more favorable because I can really see and feel the difference it has made. My skin is brighter, tighter and all around younger looking and it's not just me that thinks so because I get a lot of looks and comments from people when I go out. I hope to be able to continue to benefit from this serum because I would hate to have to change from it. You don't have to use very much at all so it really makes it worth what you pay
Date published: 2018-08-14
Rated 5 out of 5 by from Game changer I never knew I needed this until I tried it. When it comes to face and skin products smell is so important to me..this smells amazing. I come from a generation that tanned first and didn't think about the future of our skin until later in life. Now it is later in life I appreciate hydration, and a high quality product for hydration, and this is it! Non greasy, just a great smooth application that leaves you glowing.
Date published: 2018-08-12
Rated 5 out of 5 by from My Favorite Travel Companion! I absolutely love this product! It hydrates quickly - especially when I am running out the door and I don’t have time for a full routine. It fits in my make-up bag perfectly and TSA is never an issue. It’s a MUST HAVE! Bring on the sun and beach vacations!
Date published: 2018-06-06
Rated 5 out of 5 by from Great Serum Hydra-Therapy Boost Serum is amazing. It goes on easy, feels great, and works well. This serum glides over my skin with ease. It goes on fast and absorbs well. It doesn't leave my skin looking or feeling greasy or oily. The results are great. My skin look and feels hydrated and refreshed. I love that this serum is so easy to use. I only use twice a day and the results are great. I really feel like its making a difference in my skin. All in all this is a great serum! It goes on easy, feels great, and works well! I would absolutely recommend it!
Date published: 2018-07-24
Rated 4 out of 5 by from Good product I should start by saying that I’m not a real fan of serums. Generally, they seem to sit on your skin and just make your skin seem a little greasy after the next step, moisturizer. I’ve used this serum religiously and it sinks in well and does add needed moisture. If you are a serum user, this product is definitely worth a try. Didn’t just love it for the price paid.
Date published: 2018-10-08
Rated 5 out of 5 by from LOVE I love this serum! I have a very long and intense beauty routine, but I find that I can cut my routine in half by using this product. It's easy to pack and it's perfect for the summer. I have oily skin and this serum did not make me sticky. I would definitely recommend!
Date published: 2018-06-06
Rated 5 out of 5 by from All day hydration! This Hydra-Therapy Boost Serum is unlike anything I've ever tried before! It left my skin so hydrated and plumped looking! I even replaced my moisturizer with this because this was all the moisture my skin needed. The formula absorbed well and only left my skin a tiny bit oily (about the same as a regular facial oil). There's a slight fragrance which isn't bothersome to me, but if you are sensitive to scents or prefer fragrance free skincare, then this may not be for you. I've recently been having issues with random breakouts (a few times a week) and since I started using this a week ago, I haven't had any new breakouts and my skin has looked amazing! Don't know if it's a coincidence or not, but I'm not complaining! I'd definitely recommend this if your looking for a great looking skin!
Date published: 2018-07-21
Rated 5 out of 5 by from Amazing product!!! The hydra therapy boost serum came,very well packaged. The product is bottled very attractively so is definitely one that can sit out in the open on a vanity. The serum is very light on the skin and smells nice. It also absorbs quickly and leaves my skin very soft and hydrated. I've had no issues of irritation or breakouts from this serum at all. I am definitely happy with the results of the product and will continue to use it. Recommend adding this to any beauty routine for hydrated and soft skin.
Date published: 2018-07-20
Rated 4 out of 5 by from Great Product I love this product the only reason it was not a 5 star was the price however I will be ordering more ! Love the lightweight non greasy fast absorption! Thanks
Date published: 2018-06-07
Rated 5 out of 5 by from Amazing! This serum helped balance out my super oily skin and leaves it with the perfect amount of hydration. It’s feels really light on my skin too which is great!
Date published: 2018-06-07
Rated 5 out of 5 by from My New Favorite The Erno Laszlo Hydra-Therapy Boost Serum is super hydrating without leaving your face greasy. I even apply the serum under my makeup and before my primer and I didnt have an issue with shine later in the day. My face is feeling wonderful and refreshed. It goes on smooth, absorbs well and it doesn't take much product so it will last a while. I am really enjoying using the Erno Laszlo Hydra-Therapy Boost Serum and I tell my friends and family what has my face looking so great.
Date published: 2018-07-15
Rated 5 out of 5 by from It feels very laxurious on my skin! I have been using this for a month now and I can definitely say that my skin is more hydrated and softer. I used to have a flaky looking skin on my forehead but that's gone now. I use this mainly at night before bed or before I apply my foundation. I can definitely say that it works well with my foundation and make up as a whole. This Hydra-Therapy Boost Serum has a nice oil or gel like texture. It feels very luxurious when you put it on the face. I think it does brighten my face a little bit when I am using it alone but definitely do it after you wash your face. So far this is my go to serum. A little goes a long way. The packaging is also nice and it does not feel cheap. You can definitely tell it's a luxury brand. Definitely give it a try! My face feels so nice esp when I wake up in the morning. It's like renewed and replenished.
Date published: 2018-08-07
Rated 5 out of 5 by from Great Hydration for all Skin Types The serum comes in a clear pump bottle which dispenses the right amount of product for one use (at least for my oily skin it’s enough). I enjoy the gel/oily texture and the fact that I feel no need for a toner before using this serum. The product absorbs into my skin right away, leaving behind a pleasant floral scent. I’ve had no irritation or acne occur after using the serum on a regular basis, instead my skin became hydrated and elastic.
Date published: 2019-09-23
Rated 5 out of 5 by from Quality product This serum works very well. My face really needed this Hydra-Therapy Boost. I’ve been at the beach all summer and my face has been extra dry. After a month of using this, I am very happy with the results. My face is very smooth and looks nicer. A little goes a long way with this and it absorbs fast and spreads easily. It doesn’t feel thick or greasy. It has a light clean scent and instantly leaves my face feeling refreshed and hydrated.
Date published: 2018-08-20
Rated 5 out of 5 by from Excellent moisturizer! The Hydra-Therapy Boost Serum is a wonderful moisturizer that has an amazing silky smooth application, without the heaviness of many other moisturizers. I love that it absorbs completely into my skin without leaving an oily residue and my skin is left with a dewy, soft texture. There is no heavy fragrance that is overwhelming or breathtaking, just a light scent. This is by far the best moisturizing serum I have used thus far!
Date published: 2018-07-20
Rated 5 out of 5 by from hydration boost This serum starts as a thick gel that dissolves into oil droplets, spreading moisture all over skin. I apply this after cleansing and before my moisturizer. It starts wet and a little goes a long way, but it absorbs quickly. This isn’t greasy and there is no residue. There is a light, pleasant floral scent. My dry skin appreciates the added moisture. I received a free product in exchange for my honest review.
Date published: 2019-12-04
Rated 5 out of 5 by from Obsessed with this! I have never been so obsessed with a product before. I use this in the AM and before bed. My face glows! I am constantly getting compliments on how I am “glowing” a little bit goes a long way. I even got my husband using it. My fave feels so refreshed when I put it on and My skin feels so hydrated. I’m so in love with this stuff. I also feel like my tan lasts longer since my skin is so hydrated!
Date published: 2018-07-16
Rated 5 out of 5 by from miracle in a bottle was hesitant to try a serum as i have never really used more than just a sample. i am over 40 and am getting nervous about my skin looking dull . i used this and after the first time i was already getting tons of compliments. makes my skin glow and feel soft. i love this so much and will definitely purchase once i run out of product. definitely worth the cost (even if its a bit pricey)
Date published: 2018-08-09
Rated 5 out of 5 by from Best hero for oily skin. I used this as my main moisture serum. This has saved my face from acne and has reduced my oily skin. This also makes my makeup application flawless. I love this jelly texture serum. It's so soft and silky when you rub it and it feels amazing. Absorbs really quick and not sticky at all. It has hydrate and nourish my akin so well after a month of using it. I love my glowing skin now.
Date published: 2018-08-14
Rated 5 out of 5 by from Best Serum Hydra-Therapy Boost Serum has a great smell it’s not like most that has the awful smell. The serum goes on smooth and not in clumps like most face products it absorbs quickly leaving your skin feel refreshed and hydrated, leaves your face soft and smooth which is a plus when you have very dry dull skin. Will be recommending to all friends and family
Date published: 2018-07-30
Rated 5 out of 5 by from Awesome Find I have tried the Hydro Therapy Boost and love it. After using your product for the first week my skin was noticeably firmer and looked hydrated. I am pleased that you only have to apply a very small amount a little goes a long way. My dull skin looked fresh and plump. I will definitely recommend this product to co-workers and family.
Date published: 2018-07-23
Rated 5 out of 5 by from Lightweight and moisturizing The Hydra-Therapy Boost Serum is one of my favorite skin care products. I use it twice a day. It is lightweight and super moisturizing. My skin has been changing with age and I need moisture more than ever, but I can't do a heavy one. This serum is the perfect balance for my skin. I love the scent and the formula.
Date published: 2019-04-09
Rated 5 out of 5 by from Absolutely a perfect product I have oily skin so I was a bit concerned that this would make my face oily. I was so impressed by this stuff! It dried quickly and felt fantastic on my face, no oily residue at all. My skin is hydrated and brighter. I absolutely recommend this product to hydrate and brighten your face. Just a fantastic product.
Date published: 2018-07-24
Rated 5 out of 5 by from A new addition to my skin care routine!! I absolutely love the way that the Hydra-Therapy hydrated my dry skin. I use it in the morning and at night before I go to bed. My daughter, who is a teen, also tried the product and loves it. The scent is very light and has a pleasant clean scent. I highly Recommend this product in replace of your night serums.
Date published: 2018-08-14
Rated 5 out of 5 by from Best serum by far I am half way in finishing this serum but I need to stop as it’s just really gorgeous it will break my heart once I finish it. But kidding aside this serum is just amazing! My skin loves it so much and it’s so unique it being in gel form. Non sticky. Very light weight and absorbs really quickly on the skin.
Date published: 2020-01-11
Rated 5 out of 5 by from Silky I love how this serum is so silky smooth. Its light and a little goes along ways, so this bottle will last forever. Ok not forever but awhile. It goes on so easily and absorbs so quickly. At first with such a quick absorbtion I thought it wouldn't work, but I was wrong. My skin stayed hydrated all day long.
Date published: 2018-09-10
Rated 4 out of 5 by from Good hydration! I have only started using this product but so far it seems to be delivering on hydration. As a long time user of Erno Laszlo for 40 years i am surprised that this serum has so much fragrance. Otherwise I could give it 5 stars. The fragrance starts out pleasant but it is too strong and fragrant for me.
Date published: 2019-03-04
Rated 5 out of 5 by from Amazing, and worth the investment. I was fairly desperate for something for my dead-of-winter dry skin (I'm 55 and normal-to-oily the rest of the year) and this did the trick beautifully. It's cool and smooth and more genuinely hydrating than any product I've used, seriously. And a little goes a long way. I highly recommend.
Date published: 2019-02-19
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Can this be used under another serum like Timeless or is that overkill?

Asked by: Manika
Yes, you can use up to two serums at a time. As this one is very weightless and sinks right in, we recommend using it first, and then the Timeless over it, as it is heavier.
Answered by: EL Advisor
Date published: 2020-01-27

I’m 58. Is this something for mature skin? 

Asked by: Deb61
This product can be used with all skin types, but it's main result is hydration, and it does not have any anti-aging benefits. If you would prefer anti-aging serums, you could use the Timeless, Firmarine, or Transphuse lines.
Answered by: EL Advisor
Date published: 2019-05-06

Hi I have very sensitive skin, would this be OK, I use the products for sensitive skin, thanks Diane

Asked by: Tito
Yes. This product is very gentle and very soothing to the skin:-)
Answered by: JoAnne
Date published: 2019-01-31

What is the active ingredient in this product?

Asked by: Sher
• Papyrus Vegetable Sap, from the African water plant, is a complete hydration system in nature, and on skin: attracting, retaining and protecting moisture. • Sea Fennel, among the heartiest plants in nature, lends its unique powers of self-preservation to skin by helping rebuild the natural moisture barrier • Shea Butter is an age-old hydration fix for dry skin, but also supports skin’s own renewal process, helping restore and firm as it smooths, softens and nourishes.
Answered by: EL Advisor
Date published: 2019-02-10

What is the height of the bottle?

Asked by: Anne627
I’m out of the serum at the moment, but I believe the bottle is approximately 16.5 cm or 6.25 inches in height. 
Answered by: Franca
Date published: 2018-11-25

Do you all know when this will be available at Nordstrom?

Asked by: Erick
Stock is available now for the Boost Serum at Nordstrom on Michigan Ave in Chicago.
Answered by: EL Advisor
Date published: 2018-07-11

I this designed for a specific skin type? I have been a 1:00 (on the old system)

Asked by: Marj212
The Boost Serum is great for all skin types. It is ideal for dry skin in need of hydration, but it is also a great alternative to a full moisturizer for more oily skin types. We suggest trying the Boost Serum as a substitute for a PM moisturizer, which may be heavier then you need.
Answered by: EL Advisor
Date published: 2018-11-25

Is this product non-comedogenic?

Asked by: Whoami
Yes, our new Boost Serum is non-comedogenic.
Answered by: EL Advisor
Date published: 2018-10-17
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