Sai Clear Skin Serum

Smoothing and brightening vitamin C treatment

17 reviews


Sai Clear Skin Serum – 20 ml; 0.68 fl. oz.

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“Breathe deep and transport yourself to a temple of calm.”

Sai Clear Skin Serum receives its name from the visible result it provides. Powerful synergies of vitamin C and peptides combined with plant medicines and ceramide, Sai made a perfect fusion of tradition and modernity that will bring ultimate support for textural improvement, defuse brewing breakout, brighten and fasten the healing time of trauma.

Sai is a powerful source of vitamin C, great for brightening and tightening, recommended for all skin types.

Ways to play with Sai:

To increase hydration: Apply Sai right after Yen Heal and Hydrate essence toner or any of your favorite toner follow by a beauty balm or cream and finish with the Reservoir prebiotic beauty mist. For winter; Add an extra layer of twilight becalm serum before the balm/cream.

To treat inflammation:  brewing acne such as cystic acne: Mix one pump of Sai with the twilight becalm serum together in a palm and apply it together follow with the Reservoir prebiotic beauty mist.

To add a heathy glow on the skin:  Mix Sai with a little bit of seas element beauty balm in the palm of your hand, apply right after Yen Heal & Hydrate toner essence

Scent Experience: A unique combination of Cypress, Rose, Jasmine, Ylang ylang and Vanilla creates a zen-like sensory that will transport you to a sacred space — a temple in Thailand filled with incense, where you can find your inner peace.

Star Ingredients

Complete Ingredients List

Vitamin C Ester (Water Soluble)

Vitamin C Ester (Oil Soluble)

Milk Thistle

Vitamin C Ester (Water Soluble)

A more stable form of vitamin C, rich in antioxidants and anti-inflammatory benefits. Vitamin C Ester improves skin elasticity and reduces the appearance of hyperpigmentation.

Vitamin C Ester (Oil Soluble)

The most stable, penetrable form of vitamin C to brighten and repair cells whilst acting as your first line of defense against UV damage and free radicals.

Milk Thistle

Brightens skin tone, fades post-acne scarring and hyperpigmentation.

Water (used only as solvent to water soluble actives to ensure maximum efficacy of the an active), Vitamin C Ester (brightens, firms, reduces hyperpigmentation and inflammation), MSM (reduces scarring and boost natural collagen production), Aloe Vera Inner Fillet Juice* (instantly hydrates), Turmeric Hydrosol* (anti-inflammatory, soothes), Rose Moroc Hydrosol (instant hydration, helps soothe irritated skin), Rice Extract* (dense amino acids to help repair skin cells, also provides hydration), Moth Bean Extract (botanical retinol), Chebula Extract (botanical vitamin C, proven to boost collagen, brighten and reduce fine lines), Lactobacillus ferment & Lactobacillus & Coconut Fruit Extract (natural preservatives, protecting formula from bacteria, yeast and mold), Ceramide Complex [Ceramide NP (helps improve skin barrier function and increase water retention in the cell for plumper skin), Ceramide AP (keeps skin barrier intact, prevent penetration of pollutants on the skin), Ceramide EOP (improves skin cells hydration)], Tetrapeptide-30 & Glycerin (skin brightener, evens out skin tone), Holy Basil Extract* (regulates skin barrier), Tetrahexyldecyl ascorbate (Most skin-compatible vitamin C for antioxidant, treating fine lines and brightening), Raspberry Ketone Glucoside (lightens hyperpigmentation and brightens complexion), Isoamyl laurate (helps spreading the formula while softens the skin), Isoamyl cocoate (softens and moisturizes skin), Black Raspberry Oil* (moisturizes and lightens dark spots), Milk Thistle Extract (brightens, evens skin tone, fades scarring and hyperpigmentation), Cetyl palmitate & Sorbitan palmitate & Sorbitan olivate (a combination of natural derived emulsifier), Propanediol (1&3) (hydrates and helps boost the delivery of actives), Inulin (a prebiotic, helps improve skin barrier), Green Tea Extract*(promotes graceful aging), Wintergreen Leaf Extract* (a natural salicylic acid, cleans the inner lining of pores), Tocopheryl, Bakuchiol, Hyaluronic acid, Ferulic acid, Bahera Fruit Extract* (heals wounds and calms irritation), Amla Extract* (brightens and supports natural collagen production), Amur Cork Tree* (alleviates eczema, redness and sensitivity), Baikal Skullcap Extract* (relieves allergies and sensitivity), Barberry Extract* (tightens and controls oil production), Licorice Extract* (soothes irritation and heals troubled skin), Red Peony Extract* (antioxidant and anti-inflammatory), Azadirachta indica A. juss var. siamensis Valeton (Siamese neem) extract** (helps fight acne causing bacteria, provides strong antioxidant),  Green Chiretta Extract* (increases hydration and dermal density), Babchi Extract* (evens skin tone and soothes), Frankincense Resin Extract* (anti-microbial and anti-inflammatory), Ceylon Leadwort Extract* (relieves inflammation and pain), Nutgall Tree Extract* (helps release heat, toxin and swelling), Nutmeg Extract* (brightens dull skin and heals acne), Black Pepper Extract* (stimulates circulation creating a natural glow), Indian Sarspilla Extract* (antibacterial and anti-inflammatory), Arjuna Extract* (improves skin barrier function and natural moisture), Aswangandha Extract* (promotes skin's regeneration, boosts collagen), False Daisy Extract* (prevents bacteria growth while soothing the skin), Cape Jasmine Fruit Extract* (reduces swelling, soothes and heals), Chinese Goldthread Extract* (directly inhibits P. acne to provide relief from breakout and inflammation), Tree Moss Extract* (antiseptic), Wild Indigo Extract* (effective in treating psoriasis and healing wounds), Rhubarb Extract* (protects skin from infection), Mangosteen Extract* (anti-inflammatory and antibacterial), Wild Angelica Extract* (accelerates wound healing and lightens hyperpigmentation), Ylang Ylang Oil* (controls sebum and clears acne), Sweet Orange Oil* (antioxidant, anti-inflammatory, skin lightening), Rose Moroc Absolute* (antiseptic, astringent and anti-inflammatory), Vanilla Fruit CO2 Extract* (treats acne and reverses signs of aging), Weeping Cypress Oil* (tightens and firms while healing acne).  
  • * Organic
  • ** Sustainably Crafted




While skin is still wet (from Yen Heal & Hydrate Toner or water), shake and pump 1-2 pumps of Sai Serum onto a palm of your hand.


Activate the formula by rubbing the palms together and cup over your nose to stimulate your senses.


Gently press the serum into face and neck using an outward and upward, lifting motion.


Gently follow the technique shown here to stimulate circulation, bringing oxygen to the surface to ensure maximum absorption of the steps to follow.

Complete your ritual and follow with Yen Heal & Hydrate Essence Toner

We recommend using the Push and Press Technique when using the Sai Clear Skin Serum

Love Story

Growing up with a darker skin tone, I could tolerate the sun without getting burned, so sunscreen became nothing but an inconvenience. Moving into my 40’s, I began to see the sun’s accumulative damage, and finally grew to a full understanding of how a regular application of a well-formulated vitamin C treatment, in combination with consistent sunscreen protection, could work absolute magic on my skin. Thus began the Sai Clear Skin (Vitamin C) Serum formulation. The main goal was always versatility – I knew I wanted to create something more than just a stable vitamin C serum. As tough an expectation as it seemed, the Sai vision was not merely a serum that holds hydration within the skin, but one that additionally improves skin texture, combats acne, and expedites the skin’s natural healing processes while reversing the hyper-pigmentation that occurs after inflammation. After a two-year deep dive into research and testing – ancient Thai botanical knowledge was combined with powerful modern technologies resulting in the birth of Sai Clear Skin Serum. The formula contains more than 50 active ingredients which are connected like a linked chain – each one working to support and enhance the
others’ healing abilities. By exploiting the synergies of plant-based actives with multiple stable vitamin C esters and peptides, all expectations have been exceeded and the results are more than ever hoped for. I can’t wait for you to feel Sai Clear Skin Serum’s groundbreaking ability to repair, protect, and transform the health and beauty of your skin.

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What our customers say...

17 reviews
17 reviews for Sai Clear Skin Serum
  1. Sinziana

    “Just wanted to tell you that the Sai is a life changer. I’ve already been such a die hard convert to the Morning Delight and Yen Heal & Hydrate but Sai has started clearing up these dark spots of my face I COULD NOT get rid of no matter what I tried. Thank you! This is now a forever product, will be ordering again soon.” – Tafv

  2. Sinziana

    “I loved the smoky smell of this serum. It worked well fixing my face after hormonal acne flare up. Highly recommend.” – Diana

  3. Sinziana

    “Love the Sai serum. On my second bottle now, I gifted one for my brother and ordered another one as backup… My ginormous acnes are significantly reduced. The ones on my neck have shrunk within days of use, I am impressed, those suckers normally linger on for weeks.” – Pratikshya

  4. Sinziana

    “It clears pimples almost overnight, and I do see a visible difference in the brightness and texture of my skin when I use it. I will get this again! I’ve just been so impressed by the performance of everything I’ve tried from this South East Asian-inspired line.” – Arjun

  5. Sinziana

    “It’s a beautiful product! I’m noticing pigmentation on my nose is brightening up after using this consistently in the morning for over a month now. This has become my favorite Vitamin C serum.” – Ashley

  6. Sinziana

    “I’m so in love with Sai. I think my hyper-pigmentations are less visible now, and the matte skin after every application leaves me glowy. I really love the scent too.” – Ying

  7. Sinziana

    The results are so impressive, I’ve already bought a backup because I never want to be without it, and I NEVER do that, always on to trying something else.” – Erin

  8. Sinziana

    “It does wonders for my skin. Temples in Thailand must smell like temples in India, this reminds me of temples too. Gorgeous serum, worked wonders for acne prone skin, healed and brightened skin.” – Payal

  9. Sinziana

    “Just got another after my Boxwalla one went kaput. Love it so much. My skin has been super clear since I started using it. Holy grail status.” – Sarah

  10. Sinziana

    “Smells awesome like pure vanilla extract and have had zero reactions or sensitivity so far. My skin is so clear and smooth when I wake up after using Sai the night before! It’s amazing.” – Mercy

  11. Sinziana

    “I’m loving Sai so much! It’s such a great feeling to discover new textures that take us out of our comfort zone.” – Ru Voy

  12. Sinziana

    “I reach for Sai whenever I have a blemish. It helps destroy bacteria and heal the area within days!!” – Floriana

  13. Sinziana

    “Been using Sai day and night for last two weeks and it really has helped with the inflammation and texture of my skin.” – Sorn

  14. Sinziana

    “Sai clearing serum is in a league of its own… I saw a couple of new painful pimples appearing near my jaw line. So I put Sai serum to test. The first night I applied Sai, the pimples came to a head the subsequent day. The day after, the size of the pimple shrunk and they weren’t painful anymore. I was simply amazed. Sai has been so effective in healing the active pimples. And even though my skin isn’t entirely clear right now (pimple and some old acne scars), I have noticed it has been looking clearer and brighter.” – Shobhita

  15. Sinziana

    “As you know, acne is a tricky beast, so I can’t say enough what a difference your products have made for me! Seriously, before Sai I used to look like a Dalmation dog because I am super pale and my skin heals very slowly, so I would have very noticeable dots from acne scars all over the face.” – Neige

  16. Sinziana

    “Hi!! I just wanted to let you know that I had to reorder the Sai serum at full price because my face has not been the same since! I had difficulty using the product at first and my first impression was ‘meh’ but it quickly became a staple! And I never would’ve found it if it wasn’t for your box!!! I wish I wasn’t paying full price but it’s worth it. Thank you for quality products ALWAYS.” – Boxwalla Customer

  17. Sinziana

    “Sai has a unique texture compared to any other serum I’ve used. It feels quite thick, clumpy & grainy when pumped out of the bottle, but after warming it up in the palm of my hands, I am able to press it into my skin where it absorbs almost immediately. The grainy texture is due to Gypsum which is an ingredient known for it healing properties. In Sai, it functions to reduce inflammation. Once applied, I no longer feel the powderiness & instead my skin feels like it has a protective layer. I do find this makes my skin look more brightened & even toned, with the breakouts on my forehead (my problem area) calmer & with consistent use, reduced.” – Sam