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Free Aus express shipping $200+
Same-day dispatch before 2pm
Free click & collect (Cairns)

FREE RE-DOX MOISTURISER when you BUY 3 RE-DOX SERUMS - No code needed. Valid until 1/2/26.

SIV

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SIV Skin Care Products

Support Healthy, Balanced Skin with SIV Microbiome Skincare

At Idun Aesthetics, the SIV Skin Care collection offers a science-focused approach to maintaining healthier-looking skin through microbiome-supportive skincare. Designed for those who want effective yet simplified skincare solutions, SIV helps support the skin’s natural balance while promoting hydration, comfort and a stronger-looking skin barrier.
The skin is more than just a protective layer; it contains a complex ecosystem known as the skin microbiome. This community of beneficial microorganisms plays an important role in maintaining skin balance, supporting barrier function and protecting against everyday environmental stressors.

When the skin barrier becomes weakened due to factors such as over-cleansing, environmental exposure, ageing or unsuitable skincare products, skin may appear dry, irritated, sensitive or uneven. SIV focuses on supporting the natural relationship between the microbiome and skin barrier to help maintain a healthy, resilient complexion.

The skin is more than just a protective layer; it contains a complex ecosystem known as the skin microbiome. This community of beneficial microorganisms plays an important role in maintaining skin balance, supporting barrier function and protecting against everyday environmental stressors.

Why Choose SIV Skin Care?

SIV combines modern skincare science with a minimalist approach, creating formulas that support the skin without overwhelming it. Rather than focusing only on surface-level concerns, SIV works to maintain the foundations of healthy skin.
The collection is ideal for customers looking for skincare that supports:

  • Healthy skin microbiome balance
  • Skin barrier protection
  • Long-lasting hydration
  • Improved skin comfort
  • Sensitive and reactive skin support
  • A simplified daily skincare routine

For customers experiencing dryness, sensitivity or signs of an impaired skin barrier, incorporating supportive products such as skin barrier repair skincare can help maintain healthier-looking skin
SIV is designed to complement professional skincare routines and can be incorporated into everyday regimens alongside cleansers, moisturisers and sunscreen.

SIV Biome Balancing Serum

The hero product within this collection is the SIV Biome Balancing Serum, a lightweight serum designed to support the skin microbiome and maintain optimal skin balance.
This advanced serum helps nourish the skin while supporting hydration, barrier function and overall skin resilience. Its carefully selected ingredients work together to create an environment where skin can remain comfortable, balanced and healthy-looking.

Unlike complicated skincare routines that rely on multiple unnecessary steps, SIV focuses on targeted support with a simple application process. This makes it suitable for both skincare beginners and experienced users looking to enhance their existing routine.

The SIV Serum can be easily layered with other skincare products and is suitable for different skin types, including dry, combination and sensitive skin.
We have seen great success with the SIV Serum in clients with eczema-prone skin, dermatitis and atopic skin conditions, where supporting the skin barrier and microbiome is essential.

Benefits of SIV Serum for Different Skin Concerns

Sensitive Skin

Sensitive skin often occurs when the protective barrier is weakened, allowing external factors to trigger discomfort and visible irritation.
SIV supports the skin barrier and microbiome environment, helping maintain a calmer and more balanced-looking complexion. For customers specifically targeting sensitivity concerns, explore our sensitive skin care products.

Dry and Dehydrated Skin

Dry skin lacks sufficient oils, while dehydrated skin lacks water. Both conditions can affect the skin barrier and contribute to tightness, rough texture and discomfort.
SIV helps support moisture balance and hydration retention, making it a valuable addition to a hydrating skincare routine.

Skin Barrier Support

A healthy skin barrier helps protect against environmental stress while maintaining moisture levels. Factors such as harsh cleansers, weather changes and excessive exfoliation can impact barrier function.
Using microbiome-friendly skincare such as SIV can support a stronger-looking barrier and improve overall skin comfort.

How to Use SIV Biome Balancing Serum

For best results, apply the SIV Biome Balancing Serum after cleansing and toning, before moisturiser and sunscreen.
Recommended routine:

    • Cleanse skin
    • Shake the bottle vigorously
    • Apply 1-4 drops on skin
    • Wait a few minutes before continuing with next steps (serums, moisturiser, spf)

SIV can be used as part of a professional skincare routine or a simple everyday regimen focused on maintaining healthy skin.

Who Should Use SIV Skin Care?

SIV is suitable for anyone looking to support balanced, healthy-looking skin. It is particularly beneficial for customers who want to improve their skincare routine with microbiome-focused products.
SIV may be suitable for:

  • Sensitive skin types
  • Dry or dehydrated skin
  • Skin requiring barrier support
  • Customers seeking lightweight serum formulas
  • Those interested in advanced professional skincare products

Shop SIV Skin Care at Idun Aesthetics

Discover the SIV Skin Care collection at Idun Aesthetics and experience a simplified approach to healthier-looking skin. Whether you are focusing on hydration, barrier support or maintaining balanced skin, SIV provides science-led skincare designed to work with your skin’s natural functions.
Explore the SIV Serum collection today and find a microbiome-focused solution to support your skincare goals.

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What people are saying about us

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Caitlin Saint profile picture
Caitlin Saint
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Anna is such a kind and caring woman with such beautiful attention to detail. You can truly tell she cares about each and every client or customer that she comes across. She takes the time to get to understand and know her clients skin and lifestyle. Her expertise and knowledge are second to none, I look forward to supporting her in future!
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Anna Markham
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My products arrived quickly and safely packaged. I also received a complimentary mist which slotted seamlessly into my routine with lovely results. I would never had tried this product before. I loved my personalised hand written note. 5 stars!!
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Rose Sims profile picture
Rose Sims
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Such an amazing experience as soon as you walk in the doors, Anna is such a sweet and caring person who truly looks into you’re skin to personalise it to what you need, rather than what would look better for the time you’re there. Amazing work, will definitely keep coming back 😊
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Lauren Higgs profile picture
Lauren Higgs
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Always an amazing experience with Anna! Walking away feeling glowy, educated and relaxed. Highly HIGHLY Recommend her! Her results speak for themselves 🙌🏼
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Amanda Tait profile picture
Amanda Tait
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Love Idun and their products!!
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J profile picture
J
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A lovely experience, in a beautiful environment that gave amazing results, given Anna's expertise and targeted treatments :)
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Shaun Grant profile picture
Shaun Grant
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Anna knows skin! I have never been one to care for my skin and, as a 70’s Queensland baby, mine has certainly seen better days. When a friend made a passing comment that I had the “driest skin of anyone they had ever seen”, I knew it was time to do something about it. Idun Aesthetics was recommended to me and from my very first treatment, I noticed a marked improvement. After a couple of sessions, others were soon commenting on how fresh I looked - and even the over-sharing friend admitted that my skin was “glowing” since I started seeing Anna. While I can’t thank Anna enough for the impressive results her treatments have had, it is her passion and professionalism that has most impressed me. Her knowledge of skin health and care is second to none, while her warm and engaging personality ensures that I continually look forward to our consultations. For anyone seeking transformative skincare, I wholeheartedly recommend Anna at Idun Aesthetics!
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Brittany Nash profile picture
Brittany Nash
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I've never had any skin treatments before, but Anna was amazing!! She is so knowledgeable and explains everything in a way that is easy to understand. You can tell she takes great care of her clients and caters the treatment to your needs. My skin was glowing afterwards, and I can't recommend her enough.
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veronica pasti profile picture
veronica pasti
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My experience was amazing! I will definitely come back Incredible results and care
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Indiah Zutti profile picture
Indiah Zutti
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Anna is an absolute treasure! So lucky to have found Idun aesthetics, a judgement free safe space where Anna takes the time and care with your skin. She analysed my skin and recommended what was best for my current skin condition, and wow the product recommendation was on point! As someone with very dry skin it’s so refreshing to finally have a cream that makes me feel fresh and hydrated. Can’t wait for all of my further treatments and couldn’t recommend Anna at Idun any more 😇🙏🏼
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Frequently Asked Questions (FAQ)

SIV Serum, also known as SIV Biome Balancing Serum, is a microbiome-focused skincare product designed to support skin balance, hydration and barrier health.
Yes. SIV is designed to support skin comfort and can be suitable for sensitive skin types looking for gentle microbiome-focused skincare.
Yes. SIV Serum is designed for daily skincare routines and can be applied once or twice daily depending on your skincare needs.
Yes. SIV can be layered with most skincare products, including moisturisers and sunscreen.
Microbiome skincare focuses on supporting the natural ecosystem of the skin rather than only targeting visible concerns.
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