Tarte Rainforest of the Sea Deep Sea Collagen Super Serum Review

Hola Beauties! Today I’m reviewing a product that is shockingly not from Colourpop, Pixi OR Fourth Ray Beauty. I feel like that’s all I’ve been posting about lately so I’m happy to be writing about a different brand today. Specifically we’re talking about Tarte Cosmetics.

Winter has been extremely harsh on my skin this year. This is one of the first years that I’ve actually felt like the weather visibly aged me (along with factors like stress). My under-eyes developed extra texture and no matter how well I moisturized there were dry patches lurking around the corner.

My in-laws very kindly gave me a bit of money as a belated birthday gift and I jumped at the chance to splurge on a new serum from Tarte that I had been dying to try. The Tarte Rainforest of the Sea Deep Sea Collagen Super Serum has now been in my daily skincare rotation for a month and I’m ready to share my thoughts!

Tarte Cosmetics Deep Sea Collagen Super Serum Review

Tarte Cosmetics Deep Sea Collagen Super Serum Review

Who doesn’t love a good cocktail? This vegan collagen, bi-phase oil + essence delivers powerful antioxidant benefits to promote plumper & brighter looking skin. Cheers to that! — Tarte Cosmetics

The Tarte Cosmetics Deep Sea Collagen Super serum retails for $47CAD and is part of Tarte’s Rainforest of the Sea collection that focuses on dewy, hydrated skin. I reviewed the Make A Splash Hydrating Skin Savers value set almost two years ago containing three products from the line and they have since expanded it with serums, primers and more.

The Rainforest of the Sea Deep Sea Collagen Serum is a bi-phase serum. The Oil phase contains a blend of 8 oils but the only oil specifically listed in the description by Tarte is Argan Oil. Looking at the ingredients list the other 7 oils are Avocado, Coconut, Japonica Seed, Passiflora Edulis Seed, Orange Peel, Lavender and Jojoba Seed Oils. The Essence Phase of the serum contains Marine Collagen and antioxidants.

This serum claims to promote plumper, firmer and brighter looking skin. In Tarte’s clinical trial 100% of participants reported improvement in the appearance of skin elasticity which intrigued me.


I know that packaging isn’t important when it comes to how a product performs but lately I’ve realized that packaging can make or break whether or not I use an oil based product. Hear me out… the Fourth Ray Beauty face oils that I purchased in January had the stupidest packaging, just a stopper with a tiny little hole in it. I had to shake the product vigorously to get any oil out, and even then I rarely got enough to cover my face. I stopped using the oils altogether because they were too much to bother with until I finished the Matcha & Rose Face milks and repurposed their droppers for the oil.

I appreciate that the Tarte Deep Sea Collagen Super Serum came with a regular glass dropper. Not only is it functional but it’s so darn pretty! I love that the dropper is blue to match the bottle. It looks really pretty on my vanity.


I’ve gotten into the habit of applying my products on the back of my hand before I apply them. The first time I tried this serum I did that for some strange reason and it literally ran right off. Oops! Now I drop a few drops of the Deep Sea Collagen Serum directly into the palms of my hands and then I press the serum into my skin.

Because this is a Bi-Phase serum it composed of half oil and half essence. It makes for an interesting texture! I always shake the bottle before use so I get equal parts of both phases. The essence phase thins out the mixture so it’s non-greasy and feels light on the skin. I think this would be a great serum for someone curious about face oils but who doesn’t like to feel “oily!”

The Tarte Collagen Super Serum claims to be good for all skin types. Tarte recommends that dry skin users apply it as a serum and use a moisturizer afterwards and that oily skin users can use it as a serum & moisturizer combined. If any of you have oily skin and have tried this let me know what you think!


After one week of using the Tarte Collagen Super Serum I noticed a difference in my skin. Part of that could be that when it arrived it was minus 20 out and by the end of the week it had warmed up to minus 5ish. A big part of it is probably from the temperature change, however even with the warmer weather I still found myself getting nosebleeds from how dry it was at the time. It was still quite dry out!

My skin felt so smooth and hydrated when I used the serum. I gently massaged it under my eyes and on the rest of my face for weeks in the hopes that some of the marine collagen (or just the extra moisture in general) would help smooth the texture that had developed over winter. I don’t know what ingredient it was but it worked! I still applied an eye cream day and night but I genuinely think that the Collagen Serum helped rejuvenate my skin. My fine lines looked less prominent (though not invisible darn it) and in general my skin looked more plump and youthful. I think it took a good three years off my complexion but my husband says I look the same xD

As a bonus it smells really nice, it reminds me of the ocean. It has a fresh & breezy smell.

Sephora Skincare Haul

Bottom Line

do think that the Tarte Rainforest of the Sea Deep Sea Collagen Serum has helped restore my skin after a crazy dry winter. It’s cheaper than my Caudalie SOS Thirst Quenching Serum and I think that they do roughly the same thing so I’ll be purchasing this serum in it’s place the next time I need a hydrating cocktail for my dry skin.

What’s your favourite hydrating serum for dry skin?

Thanks for reading! Hopefully this blog post was helpful for anyone thinking about purchasing this serum. Let me know what you think 🙂 Talk Soon!



  1. April 22, 2019 / 9:15 am

    I’m always looking for a new serum to help with my dry skin! I finally have found the primers that work beautifully for my dry skin, and found a few serums that I like, but I will definitely be adding this one to try out! I’m so glad you enjoyed this! Great review xxx

    Melina | http://www.melinaelisa.com

    • May 2, 2019 / 10:07 pm

      What’s your favourite dry skin serum? I’ve only tried a few different serums but I’m trying to build a better skincare routine.
      Thanks for reading! x

      • May 10, 2019 / 10:49 am

        Hmm, I really like the Ole Henrickson Truth Serum, I like the Mario Badescue Vitamin C serum as well! I also really like the Fresh Seaberry Serum ( I got a sample of this one and used it for almost two months!) I like using all of these with a gel moisturizer!

        • May 10, 2019 / 12:34 pm

          I haven’t tried any of these but I’ve made a note of them! Thanks!

  2. April 20, 2019 / 9:07 pm

    I love the packaging of this, the blue is so pretty!
    Glad to hear this ended up working for you, the formula sounds really interesting! I didn’t even know that Tarte had this product!
    Speaking of the Fourth Ray Beauty facial oils, you’re right, the packaging is HORRIBLE and it’s so hard to dispense any product. It’s not even a price issue because The Ordinary has $5 serums in dropper packaging…so get it together, Fourth Ray Beauty!

    • May 2, 2019 / 10:00 pm

      Yes! The packaging of their skincare lately is so pretty. The Mermaid Hyaluronic Acid serum thing they released a while ago was packaged similar to this one too.
      I hate the Fourth Ray oil packaging!! If you use up the face milk you got with the trio you should repurpose the dropper for the oil. I cleaned mine off and it screws onto the oil bottle perfectly. It’s a life saver!

  3. April 20, 2019 / 7:45 am

    So glad to hear this product worked extremely well for you and that you noticed a visible difference. This product sounds like something I would love to try. Besides their maracuja oil and the ROTS deep dive gel cleanser, I dont know what other skincare they have to offer but this one sounds great. I just got an affordable for me serum but will be needing to purchase another so ill be looking into how much this one is. Great review!

    • May 2, 2019 / 9:58 pm

      Me too! Though I’m still needing more hydration these days, my skin is a little better but I can still tell that it’s dry.
      I haven’t tried too much of their skincare either. I did like the Macacuja eye cream a while back, but normally I just buy their makeup.
      Which serum did you get?

      • May 5, 2019 / 10:22 pm

        So is mine!! But luckily the weather is warming up. Now I’ll have to worry about getting too oily lol.
        I got an illuminating serum from a Korean brand called Oh-K. They’re CF and sold at Ulta. So far I really like it. I made sure to get another product from their brand to sort of get an impression of the quality of their products. If I like them, maybe I’ll get more in the future.

        • May 10, 2019 / 12:49 am

          Hopefully the warm weather will fix everything! But yeah oiliness in another problem altogether lol.
          I’ve never heard of Oh-K, if I visit an Ulta again in the future I’ll have to take a look! Let me know if you like their other products 🙂

          • May 14, 2019 / 1:18 am

            I plan on doing a brand focus on Oh-K once I’ve gotten the chance to try the products I got. I don’t even remember how many I got lol. But it’s coming. I got so much content planned, I just need to test all the products out 🙂

          • May 15, 2019 / 4:40 pm

            I’ll look forward to reading it! It takes so much time to test products, especially skincare. I have 3-4 skincare products that I’m slowly trying to test for review but it takes me at least a month to form an opinion 😄

          • May 17, 2019 / 8:53 pm

            OMG me too!!! Skincare takes forever!

  4. April 19, 2019 / 7:05 pm

    I’m glad to hear you have noticed a difference using this serum and it’s cheaper than that what you were using. I haven’t tried a serum before but I received a sample of one by Antipodes when I bought one of their face masks. Once I’ve used up my facial oil I’ll try it 🙂

    • April 23, 2019 / 3:15 pm

      I think this is going to be amazing in the summer! I hope your serum works for you, it’s hard to tell if skincare works from just a sample.

      • April 23, 2019 / 4:50 pm

        I think the sample is about 10ml which is good, that’s enough for me to notice a difference 🙂

        • May 2, 2019 / 10:09 pm

          That’s a good size for a sample!

  5. April 19, 2019 / 11:12 am

    I’ve found that because a lot of face serums are oily they end up leaving my face too oily in the end.

    • April 23, 2019 / 3:13 pm

      That’s unfortunate! Hopefully you’ve been able to find other skincare products that don’t do that 😕

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