Debunking the sun and moon TikTok hair trend

The latest tiktok trend sees people ponder whether they’re the sun (light hair) or the moon (dark hair), sometimes using a filter to flip between the two. However, the truth is a little bit more nuanced than this – it’s more to do with whether you suit warm or cool colours, which is why we’re seeing so many people say they’re actually not sure which one they are. With the right tone, most people will suit either light or dark hair, but they may prefer one more than the other.

Biba rocking both the light blonde and dark brunette looks c/o our central London hair colour specialists

This isn’t necessarily determined by your natural hair colour either, which won’t always be the most flattering colour for you. Think of your natural hair colour as a beautiful blank canvas, sometimes it just needs a little creative expertise to truly shine. Even nature needs a little help as often our natural hair colour misses the sparkle and shine that cosmetic colour gives us.

It's important with hair colour to find balance as well, it doesn’t have to all really light or really dark. Although these colours can be striking they often mean more maintenance which is something to keep in mind. Some clients, especially those with already light hair, can develop a perception that their blonde is never "light enough." There's a constant pursuit of that perfect, often unattainable, shade of platinum. It's not necessarily about dissatisfaction, but more about a shifting perception of what "blonde" means to them. We do see some clients wanting to go lighter with each appointment. It's crucial to have open and honest conversations about hair health, realistic expectations, and the potential for damage. Our job is to guide them towards a blonde that complements their skin tone and lifestyle, while maintaining the integrity of their hair.

However, we've definitely noticed a growing trend of blonde clients, both those with natural and colour-treated hair, opting for darker shades recently. Often it comes from a desire for a fresh look as they enter a new period of their lives, or a change in mood and attitude.

For clients who are a little more on the fence about going darker and want the change without the commitment, the "lived-in" colour trend is a fantastic option for blondes wanting to explore darker tones. By incorporating a darker, shadowed root, we can create a beautiful, face-framing effect, while maintaining lighter ends for soft, reflective light. This approach allows clients to experiment with depth and dimension without committing to a full, dramatic transformation.

If you’re committed to a dramatic change then do it in one jump. Your colourist will break this down into a few different steps, because if you put dark hair immediately over blonde hair you’ll be left with a murky slightly green tinged brunette – we see a lot of colour corrections from people doing this at home.

Then you’ll need to follow up with a colour toned conditioning mask at home like the chroma ID by Schwarzkopf Pro - we can personalise these to your new shade in salon you can read more about them here.

 Tempted to try it out? Book and consultation with one of our hair experts before thinking about taking the plunge in either direction, we would love to advise you on the best shade for you and to help your hair goals come true.