DermFriends |

Skincare News | TikTok & Instagram Trends | Skincare Bestsellers

Heather Woolery-Lloyd
October 03, 2025

A new topical ingredient, pterostilbene, has been identified as a promising antioxidant in skincare. Here is a quick summary:

Pterostilbene is a natural compound found in blueberries and grapes. It is similar to resveratrol and may help mitigate skin damage caused by oxidative stress🍇
A recent study showed that participants who used a pterostilbene emulsion for 28 days had firmer, more elastic skin with fewer wrinkles and smaller-looking pores📚
The study included 31 participants aged 32-53, who applied pterostilbene emulsion to one half of their face and a placebo emulsion to the other half, twice daily for 28 days🧴
In vivo imaging with confocal microscopy revealed epidermal thickening and increased collagen and elastic fibers📈
While preliminary research is positive, pterostilbene is a very new ingredient. More research is needed to better establish its effectiveness for skin rejuvenation💡

Three strategic celebrity skincare partnerships were announced recently. Here’s a quick summary:

The skincare industry is increasingly relying on strategic celebrity brand ambassadors, who aim to bring trust and shared values to their roles✨
Leighton Meester's partnership with Bubble aims to connect with the Gen Z and Millennial market by blending her approachable persona with enduring style🎯
- Bubble leverages Meester's celebrity to elevate its status beyond a digital brand, emphasizing that healthy, effective skincare is achievable for younger consumers🫧
Cetaphil's collaboration with Mariska Hargitay aligns Hargitay’s strength and reliability with the brand's trustworthy ethos💧
- Hargitay's role promotes Cetaphil's new Hydrating & Firming line to an audience seeking proven, anti-aging results without compromising the skin barrier🧱
Selma Blair's partnership with ESK is unique as she actively co-created her first product, Ultimate A Gold, moving beyond a traditional endorsement role🏆
- Blair brings authenticity and trust to ESK's potent, science-backed products, appealing to consumers who prioritize efficacy💖
The overall trend in celebrity skincare endorsements is shifting from simple visibility to more nuanced, authentic partnerships based on shared values and personal narratives👀

Threads is testing a new feature that hides multiple hashtags. Here is a quick summary.

Threads is now hiding numerous hashtags on re-posts from Instagram content behind a "Show hashtags" call-to-action button✨
This new measure seems intended to discourage the use of multiple hashtags, which is a common practice on Instagram🆕
Threads is keen to avoid the rampant hashtag spamming that is often used on other platforms to boost post reach⚠️
Instagram chief Adam Mosseri has repeatedly stated that hashtags are not effective for significantly increasing post reach on Instagram anymore📸
Threads rolled out its own "topic tags" in late October to allow users to add one relevant topic to a post for better discovery🚀
Threads recommends users focus on including the most relevant topic tag or posting to relevant communities to reach the right audience, rather than relying on multiple hashtags💡