Podcast Summary: The Beauty Brains – Episode 393: Jojoba Oil, Retinol, and Other Unexpected Power Couples

Release Date: April 15, 2025

Hosts: Valerie George and Perry Romanowski

Introduction

In Episode 393 of The Beauty Brains, hosts Valerie George and Perry Romanowski delve into a variety of pressing beauty topics, ranging from the presence of microplastics in cosmetics to the stability of complex skincare formulations. They also address listener questions about facial hair management, the synergistic effects of jojoba oil and retinol, and strategies for handling acne along the hairline. The episode is enriched with engaging banter, insightful discussions, and valuable scientific perspectives.

Announcements and Personal Stories

Pretty Kitty's Pregnancy

Early in the episode, Valerie shares an exciting personal update about her cat, Pretty Kitty, who is expecting kittens. This segment is filled with humorous and heartfelt exchanges between Valerie and Perry as they discuss plans to ensure the safety of Pretty Kitty and her kittens.

Valerie George [03:07]: "We're going to have to figure out how to get her in. I mean, she's tried to come in a couple times, but I just want her cats to be safe."

Beauty News

3D Printed Imitation Skin as an Alternative to Animal Testing

Valerie introduces a groundbreaking article from The Independent discussing the potential of 3D-printed imitation skin to replace animal testing in the cosmetics industry.

Perry Romanowski [06:02]: "I think we're a bit farther away with this technology to completely replace animal testing. Although I will say that animal testing in the industry has largely gone away for most things."

The hosts explore the current capabilities and limitations of this technology, emphasizing that while it holds promise, it cannot yet address all aspects of toxicology, such as reproductive toxicity or impacts on internal organs.

Johnson & Johnson's Talc Litigation Update

Valerie and Perry discuss the ongoing legal battles surrounding Johnson & Johnson’s talc products, highlighting the company's attempt to propose a $10 billion settlement amidst claims linking talc to ovarian cancer.

Perry Romanowski [14:30]: "Johnson and Johnson was trying to propose a $10 billion payout for something that they still say isn't really their fault or isn't really happening."

They draw parallels to Dow Corning's similar fate with silicone breast implants, noting the prolonged nature of such lawsuits.

Product Recalls Due to Contamination

The episode covers two significant recalls:

1. Henkel’s Tech Italy Shampoo Totale: Voluntary recall due to contamination with Klebsiella oxytoca, which can cause infections.

   Valerie George [17:06]: "Exposure can cause infection in the eyes, nose, and skin. And no bueno."

2. Acne Products Contaminated with Benzene: The FDA issues a recall for several acne treatments after some were found with undetectable or low levels of benzene, despite conflicting reports from independent testing firms.

   Perry Romanowski [19:13]: "There's nothing that says these are unsafe, but the FDA is going to be better safe than sorry."

The hosts criticize the reliability of certain independent testing companies and emphasize the importance of official FDA testing methods.

Listener Questions

1. Microplastics and Other Polymers in Cosmetics (Question from Amy)

Amy, a Patreon supporter, inquires about the presence of polymers classified as microplastics in beauty products, referencing an article by dermatologists.

Amy [25:56]: "Would love to hear your thoughts. Love the show and the Porch Kitty updates."

Discussion Highlights:

• Definitions and Classifications: Valerie and Perry explain the complexities in defining microplastics, noting that not all polymers traditionally considered safe are being reclassified under new regulatory frameworks, particularly in the EU.

• Environmental Impact vs. Cosmetic Use: They highlight that, while cosmetics contribute to microplastic pollution, industries like automotive (with tire wear) and laundry (synthetic textiles) are significantly larger contributors.

Valerie George [29:13]: "Why aren't people going after these other industries as well?"

Notable Quote:

Perry Romanowski [30:34]: "Tires are 66% of microplastics. Laundry or synthetic textiles make up about 35%."

2. Managing Facial Hair for Women (Question from Natalie)

Natalie seeks evidence-based advice on managing facial hair, questioning whether to remove it or leave it as is.

Natalie [31:53]: "I'd love to hear your insights on this topic."

Discussion Highlights:

• Personal Preference: Valerie emphasizes that removing facial hair is largely a matter of personal choice, with no definitive scientific recommendation favoring removal or retention.

• Hair Removal Methods: They discuss various methods such as shaving, laser hair removal, waxing, and threading, noting that each has its own set of benefits and considerations based on skin tone and hair color.

• Post-Removal Care: The importance of soothing the skin after hair removal is stressed to prevent irritation.

Valerie George [33:37]: "But everything else really is a personal preference."

3. Jojoba Oil Enhancing Retinol Penetration (Question from Kat)

Kat inquires about a study suggesting that jojoba oil significantly increases the penetration of retinol into the skin.

Kat [37:11]: "Applying jojoba oil could potentially increase penetration of retinol into the skin strata by a nearly 40 fold factor."

Discussion Highlights:

• Study Credibility: Valerie and Perry scrutinize the study’s origins, noting potential biases as the research was funded by a jojoba oil supplier. They question the validity and applicability of the in vitro results to real-world scenarios.

• Scientific Mechanisms: While agreeing that jojoba oil could theoretically enhance retinol penetration due to its lipophilic properties, they caution that in vitro findings don’t always translate to in vivo efficacy.

• Practical Takeaway: Despite skepticism about the study's claims, they acknowledge that if the combination feels beneficial for the user, it can be continued without expecting significant scientific validation.

Valerie George [40:42]: "It's a little bit of a red flag...but I think jojoba oil is really fantastic."

4. Combining Hypochlorous Acid and Azelaic Acid in Skincare Products (Question from Sammy)

Sammy wonders how a product can stably combine hypochlorous acid with azelaic acid, given their differing formulation requirements.

Sammy [47:58]: "Is it possible to make a product with this and another acid like azelaic acid, or do they cancel each other out?"

Discussion Highlights:

• Formulation Challenges: Valerie explains the solubility and pH requirements of azelaic acid, making the combination with hypochlorous acid complex. They speculate that the products are likely used in conjunction rather than being mixed in a single formulation.

• Product Structure: The mentioned brand, Topicals, appears to use a mist containing hypochlorous acid followed by a separate application of azelaic acid, thereby circumventing the stability issues.

Valerie George [48:31]: "So it's not that they're together, they're used in conjunction."

5. Managing Hormonal Acne Along the Hairline in Teens (Question from Katie)

Katie seeks advice for her teenage son who has developed severe acne along his hairline, despite following standard recommendations.

Katie [48:46]: "What are your thoughts on things like what shampoos may be helpful?"

Discussion Highlights:

• Salicylic Acid Shampoos: They recommend using shampoos containing salicylic acid (e.g., Neutrogena Tsal) to help manage acne, as salicylic acid is an approved anti-acne ingredient.

• Conditioner Use: Valerie suggests potentially skipping conditioners or choosing non-comedogenic options to prevent further irritation and breakouts.

• Styling Products: They consider the possibility that styling products might be contributing to the acne by spreading along the hairline and recommend avoiding such products.

• Comprehensive Approach: Emphasis is placed on maintaining clean hair practices, such as changing pillowcases regularly and thoroughly rinsing shampoo.

Valerie George [50:24]: "But at first I thought, oh, maybe it's his styling products that he's wearing."

Additional Segments

Listener Feedback and Community Engagement

Valerie and Perry interact with listener feedback, highlighting a question from Laura about unconventional marketing claims related to "skin longevity scientists." They humorously address the credibility of such titles and reinforce the importance of scientific rigor in cosmetic product claims.

Behind-the-Scenes Banter

The hosts share light-hearted moments discussing their social media presence, upcoming content for Patreon subscribers, and the creation of original music featuring "Porch Kitty." This segment underscores their commitment to engaging with their audience beyond the podcast.

Conclusion

Episode 393 of The Beauty Brains offers a comprehensive exploration of current beauty industry challenges and innovations. Valerie George and Perry Romanowski adeptly blend scientific analysis with relatable discussions, providing listeners with informed perspectives on complex topics. From scrutinizing emerging technologies to addressing everyday skincare concerns, the episode empowers audiences to make educated decisions about their beauty routines.

Notable Quotes:

• Valerie George [03:07]: "We're going to have to figure out how to get her in. I mean, she's tried to come in a couple times, but I just want her cats to be safe."

• Perry Romanowski [06:02]: "I think we're a bit farther away with this technology to completely replace animal testing."

• Perry Romanowski [14:30]: "Johnson and Johnson was trying to propose a $10 billion payout for something that they still say isn't really their fault."

• Perry Romanowski [30:34]: "Tires are 66% of microplastics. Laundry or synthetic textiles make up about 35%."

• Perry Romanowski [37:05]: "I'm not convinced that they do. I mean they get into your bloodstream and some parts of that will go to your skin maybe."

Resources Mentioned:

• Reviewer Articles:

  • The Independent article on 3D-printed imitation skin.
  • Clinical Cosmetic Investigation Dermatology study on jojoba oil and retinol.

• Products:

  • Neutrogena Tsal Shampoo
  • Topicals hypochlorous acid and azelaic acid sprays

• Organizations:

  • Plastic Soup Foundation
  • European Chemical Agency (ECHA)

Engage with The Beauty Brains:

• Patreon: Support the show at patreon.com/thebeautybrains for exclusive content and perks.
• Social Media: Follow on Instagram, X, Blue Sky, Facebook, and TikTok.
• Contact: Submit your beauty questions via audio recordings or through the show’s website.

Remember, be brainy about your beauty!